Neurons and synapses..
... The simplest type of neural pathway is a monosynaptic (single connection) reflex arc, like the knee-jerk reflex. When the doctor taps the right spot on your knee with a rubber hammer, receptors send a signal into the spinal cord through a sensory neuron. The sensory neuron passes the message to a mo ...
... The simplest type of neural pathway is a monosynaptic (single connection) reflex arc, like the knee-jerk reflex. When the doctor taps the right spot on your knee with a rubber hammer, receptors send a signal into the spinal cord through a sensory neuron. The sensory neuron passes the message to a mo ...
chapter 3 – sensation and perception
... 3. Contained in 4. Each taste bud contains 5. 1/10 second can 6. 4 primary 7. Sensory adaptation 8. Cross adaptation C. The Vestibular Senses 1. Equilibrium and awareness of 2. Arise inner ear and sense 3. 2 Kinds a. Body rotation b. Gravitation and movement 1) Utricle – 2) Saccule – 4. Travel on au ...
... 3. Contained in 4. Each taste bud contains 5. 1/10 second can 6. 4 primary 7. Sensory adaptation 8. Cross adaptation C. The Vestibular Senses 1. Equilibrium and awareness of 2. Arise inner ear and sense 3. 2 Kinds a. Body rotation b. Gravitation and movement 1) Utricle – 2) Saccule – 4. Travel on au ...
The Peripheral Nervous System and Reflex Activity
... The Peripheral Nervous System and Reflex Activity Structure of a Nerve ...
... The Peripheral Nervous System and Reflex Activity Structure of a Nerve ...
Neurons, Neurons, Neurons!
... When myelin is damaged, dense, scar-like tissue forms around nerve fibers throughout the brain and spinal cord. These scars, sometimes referred to as sclerosis, plaques, or lesions, can slow down or completely prevent the transmission of signals between nerve cells. Messages from the brain and spina ...
... When myelin is damaged, dense, scar-like tissue forms around nerve fibers throughout the brain and spinal cord. These scars, sometimes referred to as sclerosis, plaques, or lesions, can slow down or completely prevent the transmission of signals between nerve cells. Messages from the brain and spina ...
PPT File - Holden R
... • Sensation or perception: Conscious awareness of stimuli received by sensory receptors ...
... • Sensation or perception: Conscious awareness of stimuli received by sensory receptors ...
Chapter 14
... • Sensation or perception: Conscious awareness of stimuli received by sensory receptors ...
... • Sensation or perception: Conscious awareness of stimuli received by sensory receptors ...
the nervous system - Miss Gleason`s Science
... serotonin reuptake inhibitors, or SSRIs for short. SSRIs act on a specific chemical within the brain known as serotonin. This is one of several chemicals used to send messages from one nerve cell to another. ...
... serotonin reuptake inhibitors, or SSRIs for short. SSRIs act on a specific chemical within the brain known as serotonin. This is one of several chemicals used to send messages from one nerve cell to another. ...
Document
... Cranial Nerve VII: Facial • Fibers leave the pons, travel through the internal acoustic meatus, and emerge through the stylomastoid foramen to the lateral aspect of the face • Mixed nerve with five major branches • Motor functions include facial expression, and the transmittal of autonomic impulses ...
... Cranial Nerve VII: Facial • Fibers leave the pons, travel through the internal acoustic meatus, and emerge through the stylomastoid foramen to the lateral aspect of the face • Mixed nerve with five major branches • Motor functions include facial expression, and the transmittal of autonomic impulses ...
13-2nd, 3rd, 4th & 6th cranial nerves
... run superficially in the nerve and are therefore the first axons to suffer when a nerve is affected by external pressure. Consequently, the first sign of compression of the occulomotor nerve is ipsilateral slowness of the pupillary response to light. ...
... run superficially in the nerve and are therefore the first axons to suffer when a nerve is affected by external pressure. Consequently, the first sign of compression of the occulomotor nerve is ipsilateral slowness of the pupillary response to light. ...
Sensory feedback for upper limb prostheses
... to be minimally important and can be built directly into the motors. The third and fourth kinds of proprioceptive afferents receive their inputs from the two kinds of muscle spindle afferents located in the intrafusal muscles. While these afferents are clearly needed for controlling muscle length, t ...
... to be minimally important and can be built directly into the motors. The third and fourth kinds of proprioceptive afferents receive their inputs from the two kinds of muscle spindle afferents located in the intrafusal muscles. While these afferents are clearly needed for controlling muscle length, t ...
Nerve activates contraction
... Structural Classification of Neurons Unipolar neurons – have a short single process leaving the cell body The single process is short and divides almost immediately into central and peripheral fibers. In this case, the axon conducts nerve impulses both toward and away from the cell body. ...
... Structural Classification of Neurons Unipolar neurons – have a short single process leaving the cell body The single process is short and divides almost immediately into central and peripheral fibers. In this case, the axon conducts nerve impulses both toward and away from the cell body. ...
Unit10 Nervous Wk 1
... between the thumb and forefinger of another student, so that the 50 cm mark is level with the top of the forefinger. 2. Without warning, the first student drops the rule and the second student attempts to catch it between the thumb and forefinger, noting the distance on the ruler just above the fore ...
... between the thumb and forefinger of another student, so that the 50 cm mark is level with the top of the forefinger. 2. Without warning, the first student drops the rule and the second student attempts to catch it between the thumb and forefinger, noting the distance on the ruler just above the fore ...
Nervous System Student Notes
... carry information away from the cell in the form of a nerve impulse. Neurons commonly have only ____________ ____________ are simply bundles of axons. Axons are surrounded by a “Band-Aid” of cells called ____________. Multiple layers of these cells create __________________, around the axon called a ...
... carry information away from the cell in the form of a nerve impulse. Neurons commonly have only ____________ ____________ are simply bundles of axons. Axons are surrounded by a “Band-Aid” of cells called ____________. Multiple layers of these cells create __________________, around the axon called a ...
SBI4U - 9.2
... • Galvani realized that the leg muscle of a dead frog could be made to twitch electrical stimulation • Lead to scientists questioning how electric current is generated in the body • Electrical vs. Neural transmission ...
... • Galvani realized that the leg muscle of a dead frog could be made to twitch electrical stimulation • Lead to scientists questioning how electric current is generated in the body • Electrical vs. Neural transmission ...
15 2nd,3rd, 4th &6th..
... – Impaired downward & inward movement of the eye ball on the damaged side. The preganglionic parasympathetic fibers run superficially in the nerve and are therefore the first axons to suffer when a nerve is affected by external pressure. Consequently, the first sign of compression of the occulomotor ...
... – Impaired downward & inward movement of the eye ball on the damaged side. The preganglionic parasympathetic fibers run superficially in the nerve and are therefore the first axons to suffer when a nerve is affected by external pressure. Consequently, the first sign of compression of the occulomotor ...
The Peripheral and Autonomic Nervous Systems
... Preganglionic neurons in the CNS send axon to synapse on ganglionic neurons in autonomic ganglia outside the CNS The axons of the postganglionic fibers innervate cardiac muscle, smooth muscles, glands, and adipose tissues. ...
... Preganglionic neurons in the CNS send axon to synapse on ganglionic neurons in autonomic ganglia outside the CNS The axons of the postganglionic fibers innervate cardiac muscle, smooth muscles, glands, and adipose tissues. ...
Central nervous system
... • If the action potential (nerve impulse) starts, it is propagated over the entire axon • Potassium ions rush out of the neuron after sodium ions rush in • Sodium and potassium are actively transported back to their original positions = repolarization • Membrane is at rest again Copyright © 2003 Pea ...
... • If the action potential (nerve impulse) starts, it is propagated over the entire axon • Potassium ions rush out of the neuron after sodium ions rush in • Sodium and potassium are actively transported back to their original positions = repolarization • Membrane is at rest again Copyright © 2003 Pea ...
Somatosensory system.
... • Because of their location in the skin and the nature of their specialisations, different encapsulated receptor types have different forms of cutaneous sensitivity • This was first discovered not by looking at receptors themselves but by recording from single CUTANEOUS AFFERENT FIBRES (can be done ...
... • Because of their location in the skin and the nature of their specialisations, different encapsulated receptor types have different forms of cutaneous sensitivity • This was first discovered not by looking at receptors themselves but by recording from single CUTANEOUS AFFERENT FIBRES (can be done ...
Test Questions (Chapter13)
... 23. Hanna's mom had a stroke about a month ago. Her mom is telling Hanna that she cannot feel half of her face. Which disorder does Hanna's mom have? 24. The well documented horse riding accident of Christopher Reeve resulted in a spinal cord injury above C3 and he had to use a mechanical ventilato ...
... 23. Hanna's mom had a stroke about a month ago. Her mom is telling Hanna that she cannot feel half of her face. Which disorder does Hanna's mom have? 24. The well documented horse riding accident of Christopher Reeve resulted in a spinal cord injury above C3 and he had to use a mechanical ventilato ...
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.