Nerves
... • Some innervate muscles of the anterior neck • Phrenic nerve the most important nerve of the cervical plexus ...
... • Some innervate muscles of the anterior neck • Phrenic nerve the most important nerve of the cervical plexus ...
Eye & Orbit
... There is a very cool web site that allows you to simulate the eye motions expected from lesions to different cranial nerves and different eye muscles. Check it out at http://cim.ucdavis.edu/Eyes/Version1/eyesim.htm ...
... There is a very cool web site that allows you to simulate the eye motions expected from lesions to different cranial nerves and different eye muscles. Check it out at http://cim.ucdavis.edu/Eyes/Version1/eyesim.htm ...
The Peripheral Nervous System
... Nerve XII (Hypoglossal) for controlling muscles that move the tongue ( primarily motor). ...
... Nerve XII (Hypoglossal) for controlling muscles that move the tongue ( primarily motor). ...
NORMAL ANATOMY WITH ELEMENTS OF REGIONAL ANATOMY
... 1. Identification of all structures and their topography in relation to body regions. 2. Knowledge of the topography of organs, including skeletopy, which can be important for examining of the patient (surface anatomy of the heart and great vessels, percussion and auscultation areas, costal lines of ...
... 1. Identification of all structures and their topography in relation to body regions. 2. Knowledge of the topography of organs, including skeletopy, which can be important for examining of the patient (surface anatomy of the heart and great vessels, percussion and auscultation areas, costal lines of ...
Cranial Nerves and Functional Components - Dr
... lateral to the sulcus limitans is found a column of neurons that receive visceral afferent fibers. This consists of only one nucleus, the nucleus of the tractus solitarius, which extends throughout the length of the medulla. The afferent fibers that terminate in this nucleus are associated with the ...
... lateral to the sulcus limitans is found a column of neurons that receive visceral afferent fibers. This consists of only one nucleus, the nucleus of the tractus solitarius, which extends throughout the length of the medulla. The afferent fibers that terminate in this nucleus are associated with the ...
The Nervous System Peripheral Nervous System (PNS) Cranial
... structures – 12 pairs of cranial nerves – 31 pairs of spinal nerves ...
... structures – 12 pairs of cranial nerves – 31 pairs of spinal nerves ...
Brachial Plexus slides
... trunks unite to form the lateral cord the anterior division of the lower trunk continues as the medial cord and the posterior divisions of all three trunks join to form the posterior cord ...
... trunks unite to form the lateral cord the anterior division of the lower trunk continues as the medial cord and the posterior divisions of all three trunks join to form the posterior cord ...
Anatomy and Terminology of the Spine
... which is an extension of the brain, runs inside the spinal canal from C1 to L1. The spinal canal has openings called neural foramens for exiting spinal nerves (or entering, depending on your perspective) at each vertebral level (Figures 5-8). The portion of each nerve (inside the spinal canal) from ...
... which is an extension of the brain, runs inside the spinal canal from C1 to L1. The spinal canal has openings called neural foramens for exiting spinal nerves (or entering, depending on your perspective) at each vertebral level (Figures 5-8). The portion of each nerve (inside the spinal canal) from ...
Anatomy Of The vertebral column
... region and the thoracic region. The quadratus lumborum stretches from the superior edge of the pelvis (illium) and connects to the lowest rib and the tips of the lumbar transverse processes.The multifidus muscles fill the space between the spinal and transverse processes and work to stabilize each j ...
... region and the thoracic region. The quadratus lumborum stretches from the superior edge of the pelvis (illium) and connects to the lowest rib and the tips of the lumbar transverse processes.The multifidus muscles fill the space between the spinal and transverse processes and work to stabilize each j ...
NEURONS SPINAL CORD AND NERVE ROOTS
... inner “H” or butterfly shaped region of gray matter (that changes shape slightly from cervical to lumbar regions) surrounded by white matter. Each side of the gray matter contains three projections referred to as “horns”, creating the posterior gray horn, lateral gray horn, and anterior gray horn. C ...
... inner “H” or butterfly shaped region of gray matter (that changes shape slightly from cervical to lumbar regions) surrounded by white matter. Each side of the gray matter contains three projections referred to as “horns”, creating the posterior gray horn, lateral gray horn, and anterior gray horn. C ...
Lumbar Plexus
... Sympathetic trunk....Abdominal part • Branches • White rami - communicantes join the first two ganglia to the first two lumbar spinal nerves. - A white ramus contains Preganglionic nerve fibers and afferent sensory nerve fibers. • Gray rami - communicantes join each ganglion to a corresponding lumb ...
... Sympathetic trunk....Abdominal part • Branches • White rami - communicantes join the first two ganglia to the first two lumbar spinal nerves. - A white ramus contains Preganglionic nerve fibers and afferent sensory nerve fibers. • Gray rami - communicantes join each ganglion to a corresponding lumb ...
Slide 1
... Sympathetic trunk....Abdominal part • Branches • White rami - communicantes join the first two ganglia to the first two lumbar spinal nerves. - A white ramus contains Preganglionic nerve fibers and afferent sensory nerve fibers. • Gray rami - communicantes join each ganglion to a corresponding lumb ...
... Sympathetic trunk....Abdominal part • Branches • White rami - communicantes join the first two ganglia to the first two lumbar spinal nerves. - A white ramus contains Preganglionic nerve fibers and afferent sensory nerve fibers. • Gray rami - communicantes join each ganglion to a corresponding lumb ...
The Central Nervous System
... various foramina of the skull The first two attach to the forebrain, while the rest originate from the brain stem Cranial nerves serve only the head and neck structures with the exception of the vagus nerves In most cases, the nerve are named for the structures they serve or their primary ...
... various foramina of the skull The first two attach to the forebrain, while the rest originate from the brain stem Cranial nerves serve only the head and neck structures with the exception of the vagus nerves In most cases, the nerve are named for the structures they serve or their primary ...
spinal cord
... SKELETAL MUSCLES OF THE BODY DEVELOP PREDOMINANTLY FROM MYOTOMES THAT ARE DERIVATIVES OF THE MESODERM LAYER. MYOTOMES PROVIDE MYOGENIC CELLS THAT GENERATE THE MUSCLES THE MYOTOMES ARE SEGMENTED STRUCTURES. ACCORDINGLY, MUSCLES DEVELOPING FROM GIVEN SEGMENTS ARE INNERVATED BY SOMATIC MOTONEURONS DEVE ...
... SKELETAL MUSCLES OF THE BODY DEVELOP PREDOMINANTLY FROM MYOTOMES THAT ARE DERIVATIVES OF THE MESODERM LAYER. MYOTOMES PROVIDE MYOGENIC CELLS THAT GENERATE THE MUSCLES THE MYOTOMES ARE SEGMENTED STRUCTURES. ACCORDINGLY, MUSCLES DEVELOPING FROM GIVEN SEGMENTS ARE INNERVATED BY SOMATIC MOTONEURONS DEVE ...
The Autonomic Nervous System
... A. Issues from T1 to L2 B. Preganglionic fibers form the lateral gray horn of spinal cord C. Supplies visceral organs in internal body cavities and structures of superficial body regions D. Contains more ganglia than the parasympathetic division E. Located on both sides of the vertebral column F. Li ...
... A. Issues from T1 to L2 B. Preganglionic fibers form the lateral gray horn of spinal cord C. Supplies visceral organs in internal body cavities and structures of superficial body regions D. Contains more ganglia than the parasympathetic division E. Located on both sides of the vertebral column F. Li ...
The Parasympathetic Ganglia in the Head and Neck
... Epinephrine and Norepinephrine. The few which are known to be Acetylcholine (for the sweat glands and some cutaneous and skeletal muscle blood vessels). ...
... Epinephrine and Norepinephrine. The few which are known to be Acetylcholine (for the sweat glands and some cutaneous and skeletal muscle blood vessels). ...
autonomic nervous system
... • The ANS also receives sensory input from somatic senses and special sensory neurons. • The autonomic motor neurons regulate visceral activities by either increasing (exciting) or decreasing (inhibiting) ongoing activities of cardiac muscle, smooth muscle, and glands. – Most autonomic responses can ...
... • The ANS also receives sensory input from somatic senses and special sensory neurons. • The autonomic motor neurons regulate visceral activities by either increasing (exciting) or decreasing (inhibiting) ongoing activities of cardiac muscle, smooth muscle, and glands. – Most autonomic responses can ...
Chapter 13 Lecture Outline
... • Carry proprioceptive signals from limbs and trunk up to the cerebellum • They are made up of axons of second-order neurons – First-order neurons originate in the muscles and tendons and end in posterior horn of the spinal cord – Second-order nerves ascend spinocerebellar tracts and end in cerebell ...
... • Carry proprioceptive signals from limbs and trunk up to the cerebellum • They are made up of axons of second-order neurons – First-order neurons originate in the muscles and tendons and end in posterior horn of the spinal cord – Second-order nerves ascend spinocerebellar tracts and end in cerebell ...
powerpoint lecture
... • All ventral rami except T2–T12 form interlacing nerve networks called nerve plexuses – cervical, brachial, lumbar, and sacral ...
... • All ventral rami except T2–T12 form interlacing nerve networks called nerve plexuses – cervical, brachial, lumbar, and sacral ...
A new function for radial glial cells in white matter formation
... pial surface (PS) (dotted line). (C) Radial glial processes are highly organised in the white matter (contains growing axons). (D)The density of radial glial cells is tightly conserved in the rostral and caudal spinal cord during development, at E14, E16 and E18. Grey Matter White Matter (E) Radial ...
... pial surface (PS) (dotted line). (C) Radial glial processes are highly organised in the white matter (contains growing axons). (D)The density of radial glial cells is tightly conserved in the rostral and caudal spinal cord during development, at E14, E16 and E18. Grey Matter White Matter (E) Radial ...
Training
... This illustration depicts the basic organization of the spinal gray matter The posterior horns are almost entirely comprised of interneurons ...
... This illustration depicts the basic organization of the spinal gray matter The posterior horns are almost entirely comprised of interneurons ...
Chapter 01 FlexArt
... 2 Stretch signals travel to spinal cord via primary afferent fiber and dorsal root. 3 Primary afferent neuron stimulates alpha motor neuron in spinal cord. ...
... 2 Stretch signals travel to spinal cord via primary afferent fiber and dorsal root. 3 Primary afferent neuron stimulates alpha motor neuron in spinal cord. ...
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.