Chapter 45 Central Nervous System BRain
... • Sensory Neurons (afferent) – Transmit information to the CNS ...
... • Sensory Neurons (afferent) – Transmit information to the CNS ...
Spinal nerves 1
... • multipolar – more than 2 processes (axon + dendrites) – majority of neurons • bipolar – two processes only (axon + dendrite) – retina, ganglia n. VIII, olfactory mucosa • pseudounipolar – one process bifurcated into peripheral and central processes (shape „T“) – somatosensory and viscerosensory ga ...
... • multipolar – more than 2 processes (axon + dendrites) – majority of neurons • bipolar – two processes only (axon + dendrite) – retina, ganglia n. VIII, olfactory mucosa • pseudounipolar – one process bifurcated into peripheral and central processes (shape „T“) – somatosensory and viscerosensory ga ...
Document
... muscles, and joints • Visceral afferent fibers—convey impulses from visceral organs 2. Motor (efferent) division • Transmits impulses from the CNS to effector organs ...
... muscles, and joints • Visceral afferent fibers—convey impulses from visceral organs 2. Motor (efferent) division • Transmits impulses from the CNS to effector organs ...
Fundamentals of the Nervous System and Nervous Tissue: Part A
... muscles, and joints • Visceral afferent fibers—convey impulses from visceral organs 2. Motor (efferent) division • Transmits impulses from the CNS to effector organs ...
... muscles, and joints • Visceral afferent fibers—convey impulses from visceral organs 2. Motor (efferent) division • Transmits impulses from the CNS to effector organs ...
Bioenergetics - Eastern Michigan University
... – Occurs when depolarization reaches threshold • Permeability of the membrane changes, allowing Na+ into the cell, making the interior positively ...
... – Occurs when depolarization reaches threshold • Permeability of the membrane changes, allowing Na+ into the cell, making the interior positively ...
The Nervous System
... 2-Motor (efferent) division Nerve fibers that carry impulses away from the central nervous system ( to Muscles &Glands). It has two subdivisions 1-Somatic nervous system = voluntary, it controls skeletal muscles N. B. skeletal muscle reflexes are involuntary 2-Autonomic nervous system = involun ...
... 2-Motor (efferent) division Nerve fibers that carry impulses away from the central nervous system ( to Muscles &Glands). It has two subdivisions 1-Somatic nervous system = voluntary, it controls skeletal muscles N. B. skeletal muscle reflexes are involuntary 2-Autonomic nervous system = involun ...
32. Sensory organs. organ of smell and taste
... All sensory receptors send info to the CNS via an action potential… • At the CNS, info is routed according to the stimulus and its location • The stronger the stimulus, the higher the frequency of action potentials • Some receptors adapt, that is their sensitivity to a stimulus is reduced if the st ...
... All sensory receptors send info to the CNS via an action potential… • At the CNS, info is routed according to the stimulus and its location • The stronger the stimulus, the higher the frequency of action potentials • Some receptors adapt, that is their sensitivity to a stimulus is reduced if the st ...
Muscular Disorders and Diseases
... Results in the face drooping, inability to close eye or pucker lips, drooling and difficulty swallowing. Treatment not typically needed, but corticosteroids may reduce swelling around the facial nerve ...
... Results in the face drooping, inability to close eye or pucker lips, drooling and difficulty swallowing. Treatment not typically needed, but corticosteroids may reduce swelling around the facial nerve ...
File
... RESTING MEMBRANE POTENTIAL If a neuron is not sending a signal or impulse it is said to be at rest While at rest, potassium ions (K+) are found mainly inside the membrane, and sodium ions (Na+) are found mainly outside the membrane Resting potential - difference in electric charge across the me ...
... RESTING MEMBRANE POTENTIAL If a neuron is not sending a signal or impulse it is said to be at rest While at rest, potassium ions (K+) are found mainly inside the membrane, and sodium ions (Na+) are found mainly outside the membrane Resting potential - difference in electric charge across the me ...
Principles of Sensory Coding
... Exteroreceptors. These are the familiar receptors found in the skin that mediate the sub-modalities of touch, pain and temperature. These types of sensory input can mediate both rapid responses (e.g. reflexes) and reach the cerebral cortex and induce perception. Proprioceptors. Proprioceptor afferen ...
... Exteroreceptors. These are the familiar receptors found in the skin that mediate the sub-modalities of touch, pain and temperature. These types of sensory input can mediate both rapid responses (e.g. reflexes) and reach the cerebral cortex and induce perception. Proprioceptors. Proprioceptor afferen ...
Chapter 2, section 2
... • Cycle of events in which information from one step controls or affects a previous step EX: Cooling process of your body ...
... • Cycle of events in which information from one step controls or affects a previous step EX: Cooling process of your body ...
Nervous-System
... • 1. Take one pipe cleaner and roll it into a ball. This is will be the cell body. • 2.Take another pipe cleaner and attach it to the new "cell body" by pushing it through the ball so there are two halves sticking out. Take the two halves and twist them together into a single extension. This will be ...
... • 1. Take one pipe cleaner and roll it into a ball. This is will be the cell body. • 2.Take another pipe cleaner and attach it to the new "cell body" by pushing it through the ball so there are two halves sticking out. Take the two halves and twist them together into a single extension. This will be ...
The Peripheral Nervous System The P.N.S.
... Sensory nerves: carry information from the sensory organs towards the C.N.S. Motor nerves: carry information from the C.N.S. to muscles and organs. ...
... Sensory nerves: carry information from the sensory organs towards the C.N.S. Motor nerves: carry information from the C.N.S. to muscles and organs. ...
Biology 211 Anatomy & Physiology I
... Recall: All organs are composed of, at most, four tissues Epithelial tissue Connective tissue Muscle tissue Nervous tissue Nervous tissue: Excitable cells (neurons) ...
... Recall: All organs are composed of, at most, four tissues Epithelial tissue Connective tissue Muscle tissue Nervous tissue Nervous tissue: Excitable cells (neurons) ...
thalamus
... Afferents: Visual from the optic tract Projects to primary visual cortex in occipital cortex ( Area 17). ...
... Afferents: Visual from the optic tract Projects to primary visual cortex in occipital cortex ( Area 17). ...
The Nervous System Ch. 12 & 13
... flow down segments of the axon’s membrane. It will never move backward due to the refractory period of the membrane before the AP. In myelinated fibers, the myelin sheath prevents ion movement, so electrical changes only occur in the gaps between myelin (Nodes of Ranvier). The AP seems to “lea ...
... flow down segments of the axon’s membrane. It will never move backward due to the refractory period of the membrane before the AP. In myelinated fibers, the myelin sheath prevents ion movement, so electrical changes only occur in the gaps between myelin (Nodes of Ranvier). The AP seems to “lea ...
No Pain, No Gain: Understanding Muscle Pain
... o Muscle-specific injury model in mice o Block blood flow in right forepaw by tying off brachial ...
... o Muscle-specific injury model in mice o Block blood flow in right forepaw by tying off brachial ...
System Introduction to Sensory Physiology: Sensory- Motor
... General Properties of Sensory Systems! 1.! Importance of peripheral structures! 3.! Adequate Stimulus! 5.! Range Fractionation! 7.! Stimulus-Response Relationship! 9.! Adaptation! 11.! Efferent Control! 13.! Higher level processing for perception (what you ! ...
... General Properties of Sensory Systems! 1.! Importance of peripheral structures! 3.! Adequate Stimulus! 5.! Range Fractionation! 7.! Stimulus-Response Relationship! 9.! Adaptation! 11.! Efferent Control! 13.! Higher level processing for perception (what you ! ...
I. Nerve Organization
... C. Forebrain: Most recent evolutionary component of brain. 1. Divided into two hemispheres 2. Cerebrum in mammals. 3. Thalamus: Relay or bridge to Cerebrum 4. Hypothalamus: Links brain with endocrine system; controls homeostatis. ...
... C. Forebrain: Most recent evolutionary component of brain. 1. Divided into two hemispheres 2. Cerebrum in mammals. 3. Thalamus: Relay or bridge to Cerebrum 4. Hypothalamus: Links brain with endocrine system; controls homeostatis. ...
44 Nociceptive sensation. Somatic sensory analyzer
... neurons but SP can diffuse and affect other populations of neurons because there is no specific reuptake. ...
... neurons but SP can diffuse and affect other populations of neurons because there is no specific reuptake. ...
2 Guided Notes for PPT 7, Hearing and Sight
... Rod and cone cells are the light absorbing cells. Rod cells: used for night vision or monochromatic vision Cone cells: used to capture color and are photopic..day vision Bipolar cells _________________________________________________ ...
... Rod and cone cells are the light absorbing cells. Rod cells: used for night vision or monochromatic vision Cone cells: used to capture color and are photopic..day vision Bipolar cells _________________________________________________ ...
Lecture 15
... (fictive walking etc). Even though sensory input does not create rhythmic patterns it can modify them. This rhythmic activity is due to cyclical changes in the firing patterns of spinal cord neurons; each limb or segment has a pair of independent pattern generator whose activity is co-ordinated with ...
... (fictive walking etc). Even though sensory input does not create rhythmic patterns it can modify them. This rhythmic activity is due to cyclical changes in the firing patterns of spinal cord neurons; each limb or segment has a pair of independent pattern generator whose activity is co-ordinated with ...
Nervous System Worksheets
... exit the spinal cord through openings between the vertebrae. The part of the nerve that exits the spinal cord is called the nerve root. It then branches into smaller nerves that control different parts of the body called the peripheral nerves. ...
... exit the spinal cord through openings between the vertebrae. The part of the nerve that exits the spinal cord is called the nerve root. It then branches into smaller nerves that control different parts of the body called the peripheral nerves. ...
Selective nerve root blocks - Desert Spine and Sports Physicians
... the response to this injection to determine whether or not this nerve root is the source of pain. By confirming or denying a patient’s typical pain, this injection provides information allowing for proper treatment. ...
... the response to this injection to determine whether or not this nerve root is the source of pain. By confirming or denying a patient’s typical pain, this injection provides information allowing for proper treatment. ...
Microneurography
Microneurography is a neurophysiological method employed by scientists to visualize and record the normal traffic of nerve impulses that are conducted in peripheral nerves of waking human subjects. The method has been successfully employed to reveal functional properties of a number of neural systems, e.g. sensory systems related to touch, pain, and muscle sense as well as sympathetic activity controlling the constriction state of blood vessels. To study nerve impulses of an identified neural system, a fine tungsten needle electrode is inserted into the nerve and connected to a high gain recording amplifier. The exact position of the electrode tip within the nerve is then adjusted in minute steps until the electrode discriminates impulses of the neural system of interest. A unique feature and a significant strength of the microneurography method is that subjects are fully awake and able to cooperate in tests requiring mental attention, while impulses in a representative nerve fibre or set of nerve fibres are recorded, e.g. when cutaneous sense organs are stimulated or subjects perform voluntary precision movements.