Stimulus-gated channels

are ion channels that open in response to chemicals produced by a sensory stimulus or by a chemical stimulus received from another neuron.

Relative refractory period

is the few milliseconds after the absolute refractory period—the time during which the membrane is repolarizing and restoring the RMP.

space is im-mediately outside the dura mater but inside the bony cover-ings of the spinal cord. I

conduct sensory impulses up the cord to the brain.

conduct motor impulses down the cord from the brain.

is found deep within the neck. Ventral rami of the first four cervical spinal nerves (C1 through C4), along with a branch of the ventral ramus of C5, exchange fibers in the cervical plexus.

is formed by the intermingling of fibers from the first four lumbar nerves (

consists of neural pathways that are separate from the parasympathetic pathways.

a special type of visceroceptor. They are less numerous and generally more specialized than other internally placed receptors, and their location is limited to skeletal muscle, joint capsules, and tendons. P

located internally, often within the substance of body organs (viscera), and when stimulated provide information about the internal environment. They are acti-vated by stimuli such as pressure, stretching, and chemical changes that may originate in divers

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Roberto

Physiology Stack 2

Term	Definition
Stimulus-gated channels	are ion channels that open in response to chemicals produced by a sensory stimulus or by a chemical stimulus received from another neuron.
Relative refractory period	is the few milliseconds after the absolute refractory period—the time during which the membrane is repolarizing and restoring the RMP.
Epidural space	space is im-mediately outside the dura mater but inside the bony cover-ings of the spinal cord. I
Ascending tracts	conduct sensory impulses up the cord to the brain.
Descending tracts	conduct motor impulses down the cord from the brain.
Cervical plexus	is found deep within the neck. Ventral rami of the first four cervical spinal nerves (C1 through C4), along with a branch of the ventral ramus of C5, exchange fibers in the cervical plexus.
Lumbar plexus	is formed by the intermingling of fibers from the first four lumbar nerves (
Sympathetic division	consists of neural pathways that are separate from the parasympathetic pathways.
Proprioceptors	a special type of visceroceptor. They are less numerous and generally more specialized than other internally placed receptors, and their location is limited to skeletal muscle, joint capsules, and tendons. P
Visceroceptors	located internally, often within the substance of body organs (viscera), and when stimulated provide information about the internal environment. They are acti-vated by stimuli such as pressure, stretching, and chemical changes that may originate in divers

Created by: robdom

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