BIOL 218 MTX3 QA 101110.5
... Which of the following is the most common type of neurons in the central nervous system, and is exemplified by all the motor neurons that control skeletal muscle? A. anaxonic neurons B. multipolar neurons C. pseudounipolar neurons D. bipolar neurons ...
... Which of the following is the most common type of neurons in the central nervous system, and is exemplified by all the motor neurons that control skeletal muscle? A. anaxonic neurons B. multipolar neurons C. pseudounipolar neurons D. bipolar neurons ...
Spinal reflexes
... nearby sympathetic ganglion. Because these preganglionic axons are myelinated, this branch has a light color and is therefore known as the white ramus. White rami are only found between T1 and L2. ...
... nearby sympathetic ganglion. Because these preganglionic axons are myelinated, this branch has a light color and is therefore known as the white ramus. White rami are only found between T1 and L2. ...
Orthotics Best Practice Group Spinal Manual
... The Axis (C2) has a body, spine and other typical vertebral processes. It has a peg-like structure called the dens (tooth) or odontoid process which projects superiorly from its body. The dens is actually the missing body of the atlas, which fuses with the axis during embryonic development. The dens ...
... The Axis (C2) has a body, spine and other typical vertebral processes. It has a peg-like structure called the dens (tooth) or odontoid process which projects superiorly from its body. The dens is actually the missing body of the atlas, which fuses with the axis during embryonic development. The dens ...
Chapter 3 - Morgan Community College
... • The lumbar plexus supplies the anterolateral abdominal wall, external genitals, and part of the lower extremities (Figure 13.9a and b, Exhibit 13.3). – The largest nerve arising from the lumbar plexus is the femoral nerve. – Injury to the femoral nerve is indicated by an inability to extend the le ...
... • The lumbar plexus supplies the anterolateral abdominal wall, external genitals, and part of the lower extremities (Figure 13.9a and b, Exhibit 13.3). – The largest nerve arising from the lumbar plexus is the femoral nerve. – Injury to the femoral nerve is indicated by an inability to extend the le ...
Close this window to return to the previous page or go
... cord as paired dorsal and ventral nerve roots and exit the vertebrae via intervertebral foramina. The dorsal nerves are composed of somatic and visceral sensory nerve fibers and may contain motor fibers as well; the ventral roots are generally composed of both somatic and visceral motor nerve fibers ...
... cord as paired dorsal and ventral nerve roots and exit the vertebrae via intervertebral foramina. The dorsal nerves are composed of somatic and visceral sensory nerve fibers and may contain motor fibers as well; the ventral roots are generally composed of both somatic and visceral motor nerve fibers ...
Three-dimensional reconstruction of the central nervous
... of the tardigrade brain which has been described by Marcus (1929). There are two pairs of caudally directed lobes, the outer dorsolateral lobes which bear the eyes (arrow in Fig. 1c) and the more ventral inner lobes (Figs. 1c, 2e). The largest part of the brain consists of three paired bilateralsymm ...
... of the tardigrade brain which has been described by Marcus (1929). There are two pairs of caudally directed lobes, the outer dorsolateral lobes which bear the eyes (arrow in Fig. 1c) and the more ventral inner lobes (Figs. 1c, 2e). The largest part of the brain consists of three paired bilateralsymm ...
BIOL 218 MTX3 Q 101110.5
... Which of the following is the most common type of neurons in the central nervous system, and is exemplified by all the motor neurons that control skeletal muscle? A. anaxonic neurons B. multipolar neurons C. pseudounipolar neurons D. bipolar neurons ...
... Which of the following is the most common type of neurons in the central nervous system, and is exemplified by all the motor neurons that control skeletal muscle? A. anaxonic neurons B. multipolar neurons C. pseudounipolar neurons D. bipolar neurons ...
牂楡獮整m
... Ten of the 12 pairs of cranial nerves (CN III-XII) exit from the brainstem and are primarily responsible for the innervation of the head and neck. CN I (the olfactory nerve) is the initial segment of the olfactory pathway; CN II (the optic nerve) is, in fact, not a peripheral nerve at all, but rathe ...
... Ten of the 12 pairs of cranial nerves (CN III-XII) exit from the brainstem and are primarily responsible for the innervation of the head and neck. CN I (the olfactory nerve) is the initial segment of the olfactory pathway; CN II (the optic nerve) is, in fact, not a peripheral nerve at all, but rathe ...
Clinical Anatomy of the Trigeminal Nerve
... Visceral motor nerves are not a true component of the trigeminal nerve, but "hitchhike" along its branches. (The term "visceral" refers to viscera, including smooth muscle and glands). They originate centrally from other cranial nerves and travel along sensory branches of the trigeminal nerve en rou ...
... Visceral motor nerves are not a true component of the trigeminal nerve, but "hitchhike" along its branches. (The term "visceral" refers to viscera, including smooth muscle and glands). They originate centrally from other cranial nerves and travel along sensory branches of the trigeminal nerve en rou ...
Linea alba conus medullaris: a stable anatomical
... the second lumbar vertebrae [3–7]. The structure of the pia mater is that of loose connective tissue, containing collagen, elastin and reticulin fibers with flat mesothyliocytes like those of the arachnoid; the cells are considered to be fibrocytic elements by some, especially where they form severa ...
... the second lumbar vertebrae [3–7]. The structure of the pia mater is that of loose connective tissue, containing collagen, elastin and reticulin fibers with flat mesothyliocytes like those of the arachnoid; the cells are considered to be fibrocytic elements by some, especially where they form severa ...
exä|xã TÜà|vÄx
... considered as general somatic12, special visceral efferent7,13 or mixed, depending on the view taken of the embryological origin of the sternocleidomastoid and trapezius muscles which it supply11. The custom of describing the two roots as a single cranial nerve has been followed in the standard refe ...
... considered as general somatic12, special visceral efferent7,13 or mixed, depending on the view taken of the embryological origin of the sternocleidomastoid and trapezius muscles which it supply11. The custom of describing the two roots as a single cranial nerve has been followed in the standard refe ...
Cranial Nerves
... APPLIED ANATOMY OF TRIGEMINAL NERVE: A lesion of the whole trigeminal nerve causes anaesthesia of the anterior half of the scalp, of the face (except a small area near the angle of mandible), of the cornea & conjunctiva, the mucosae of the nose, mouth and presulcal part of the tongue. Paralysis and ...
... APPLIED ANATOMY OF TRIGEMINAL NERVE: A lesion of the whole trigeminal nerve causes anaesthesia of the anterior half of the scalp, of the face (except a small area near the angle of mandible), of the cornea & conjunctiva, the mucosae of the nose, mouth and presulcal part of the tongue. Paralysis and ...
Chapter 7 Part 2 Nervous Tissue
... Neuron Cell Body Location •Most neuron cell bodies are found in the central nervous system •Gray matter—cell bodies and unmyelinated fibers •Nuclei—clusters of cell bodies within the white matter of the central nervous system •Ganglia—collections of cell bodies outside the central nervous system ...
... Neuron Cell Body Location •Most neuron cell bodies are found in the central nervous system •Gray matter—cell bodies and unmyelinated fibers •Nuclei—clusters of cell bodies within the white matter of the central nervous system •Ganglia—collections of cell bodies outside the central nervous system ...
Spinal Cord - Fullfrontalanatomy.com
... Actually, sciatic is 2 nerves in oneYou will see the split of these just before the back of the knee. i. Tibial nerve: innervates muscles of calf & sole of foot ii. Common fibular nerve: innervates superficial & deep muscles of anterior & lateral leg b) pudendal nerve: muscles of the perineum, uroge ...
... Actually, sciatic is 2 nerves in oneYou will see the split of these just before the back of the knee. i. Tibial nerve: innervates muscles of calf & sole of foot ii. Common fibular nerve: innervates superficial & deep muscles of anterior & lateral leg b) pudendal nerve: muscles of the perineum, uroge ...
Chapter 13
... 43. What portion of the spinal cord connects with nerves of the upper limbs? With nerves of the lower limbs? Ans: pg. 477 – a) cervical enlargement; b) lumbar enlargement 44. What are the conus medullaris, filum terminale, and cauda equina? Ans: pg. 477 – conus medullaris: tapered end of the spinal ...
... 43. What portion of the spinal cord connects with nerves of the upper limbs? With nerves of the lower limbs? Ans: pg. 477 – a) cervical enlargement; b) lumbar enlargement 44. What are the conus medullaris, filum terminale, and cauda equina? Ans: pg. 477 – conus medullaris: tapered end of the spinal ...
Lecture Notes [Type text] Anatomy 2B 1 THE NERVOUS SYSTEM
... Proprioceptive afferents back from: ...
... Proprioceptive afferents back from: ...
9 Nerves of the GIT Mai Abu Hakmeh Alma Jarkas Mohammed H.Al
... The left side is explained in the previous page . In the hindgut the story is a bit different , since the parasympathetic fibers are recieved from the sacral plexus , notice that the synapse did not take place in a corresponding vertebral ganglion , but instead , the sympathetic fiber descended ...
... The left side is explained in the previous page . In the hindgut the story is a bit different , since the parasympathetic fibers are recieved from the sacral plexus , notice that the synapse did not take place in a corresponding vertebral ganglion , but instead , the sympathetic fiber descended ...
AP10 Ch7 Nervous Sys-student version-2014
... the median and lateral apertures. Some CSF flows through the central canal of the spinal cord. ...
... the median and lateral apertures. Some CSF flows through the central canal of the spinal cord. ...
Chapter One The Human Body: An Orientation
... a. Controls metabolic rates (98) b. Too low, slows things down; too high, reactions occur to quickly e. Atmospheric Pressure a. Important for breathing b. High altitudes – pressure is low, air is thin, can have problems maintaining cellular support Homeostasis A. Ability to maintain relatively stabl ...
... a. Controls metabolic rates (98) b. Too low, slows things down; too high, reactions occur to quickly e. Atmospheric Pressure a. Important for breathing b. High altitudes – pressure is low, air is thin, can have problems maintaining cellular support Homeostasis A. Ability to maintain relatively stabl ...
introduction and organization of the nervous system
... information,when appropriate,is integrated with other nervous impulses and channeled into the common efferent pathway. ...
... information,when appropriate,is integrated with other nervous impulses and channeled into the common efferent pathway. ...
Distal - Fun Anatomy
... Flexor compartment of the forearm: Superficial layer Attachments: Proximal: Humeral head: medial epicondyle of humerus Ulnar head: olecranon process of ulna Distal: Humeral head: hook of hamate Ulnar head: base of 5th metacarpal Action: flex + UD wrist jt. (also; stabilize + flex elbow) PERIPHERAL ...
... Flexor compartment of the forearm: Superficial layer Attachments: Proximal: Humeral head: medial epicondyle of humerus Ulnar head: olecranon process of ulna Distal: Humeral head: hook of hamate Ulnar head: base of 5th metacarpal Action: flex + UD wrist jt. (also; stabilize + flex elbow) PERIPHERAL ...
The autonomic nervous system
... Nerve fibers leave the paravertebral ganglia by three routes: spinal, sympathetic, and splanchnic nerves. These are numbered in figure 3 to correspond to the following descriptions: 1. The spinal nerve route. Some postganglionic fibers exit by way of the gray ramus, return to the spinal nerve or its ...
... Nerve fibers leave the paravertebral ganglia by three routes: spinal, sympathetic, and splanchnic nerves. These are numbered in figure 3 to correspond to the following descriptions: 1. The spinal nerve route. Some postganglionic fibers exit by way of the gray ramus, return to the spinal nerve or its ...
NERVE SUPPLY OF ABDOMEN
... Create a visual representation of nerves supplying the abdomen. Sequence and catagorize information on the segmental sympathetic supplies and referred pain. Understand the basic structure of paravertebral plexuses. Obtain information about somatic nervous supply of abdomen. ...
... Create a visual representation of nerves supplying the abdomen. Sequence and catagorize information on the segmental sympathetic supplies and referred pain. Understand the basic structure of paravertebral plexuses. Obtain information about somatic nervous supply of abdomen. ...
15 | the autonomic nervous system
... To continue with the analogy of the circuit diagram, there are three different types of “junctions” that operate within the sympathetic system (Figure 15.3). The first type is most direct: the sympathetic nerve projects to the chain ganglion at the same level as the target effector (the organ, tissu ...
... To continue with the analogy of the circuit diagram, there are three different types of “junctions” that operate within the sympathetic system (Figure 15.3). The first type is most direct: the sympathetic nerve projects to the chain ganglion at the same level as the target effector (the organ, tissu ...
Nervous system
The nervous system is the part of an animal's body that coordinates its voluntary and involuntary actions and transmits signals to and from different parts of its body. Nervous tissue first arose in wormlike organisms about 550 to 600 million years ago. In vertebrate species it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS contains the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body. Nerves that transmit signals from the brain are called motor or efferent nerves, while those nerves that transmit information from the body to the CNS are called sensory or afferent. Most nerves serve both functions and are called mixed nerves. The PNS is divided into a) somatic and b) autonomic nervous system, and c) the enteric nervous system. Somatic nerves mediate voluntary movement. The autonomic nervous system is further subdivided into the sympathetic and the parasympathetic nervous systems. The sympathetic nervous system is activated in cases of emergencies to mobilize energy, while the parasympathetic nervous system is activated when organisms are in a relaxed state. The enteric nervous system functions to control the gastrointestinal system. Both autonomic and enteric nervous systems function involuntarily. Nerves that exit from the cranium are called cranial nerves while those exiting from the spinal cord are called spinal nerves.At the cellular level, the nervous system is defined by the presence of a special type of cell, called the neuron, also known as a ""nerve cell"". Neurons have special structures that allow them to send signals rapidly and precisely to other cells. They send these signals in the form of electrochemical waves traveling along thin fibers called axons, which cause chemicals called neurotransmitters to be released at junctions called synapses. A cell that receives a synaptic signal from a neuron may be excited, inhibited, or otherwise modulated. The connections between neurons can form neural circuits and also neural networks that generate an organism's perception of the world and determine its behavior. Along with neurons, the nervous system contains other specialized cells called glial cells (or simply glia), which provide structural and metabolic support.Nervous systems are found in most multicellular animals, but vary greatly in complexity. The only multicellular animals that have no nervous system at all are sponges, placozoans, and mesozoans, which have very simple body plans. The nervous systems of the radially symmetric organisms ctenophores (comb jellies) and cnidarians (which include anemones, hydras, corals and jellyfish) consist of a diffuse nerve net. All other animal species, with the exception of a few types of worm, have a nervous system containing a brain, a central cord (or two cords running in parallel), and nerves radiating from the brain and central cord. The size of the nervous system ranges from a few hundred cells in the simplest worms, to around 100 billion cells in humans.The central nervous system functions to send signals from one cell to others, or from one part of the body to others and to receive feedback. Malfunction of the nervous system can occur as a result of genetic defects, physical damage due to trauma or toxicity, infection or simply of ageing. The medical specialty of neurology studies disorders of the nervous system and looks for interventions that can prevent or treat them. In the peripheral nervous system, the most common problem is the failure of nerve conduction, which can be due to different causes including diabetic neuropathy and demyelinating disorders such as multiple sclerosis and amyotrophic lateral sclerosis.Neuroscience is the field of science that focuses on the study of the nervous system.