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Flashcards in Nervous Tissue Deck (15):
1

structural division of nervous system

CNS vs. PNS

2

subdivision that includes the brain and spinal cord

CNS

3

subdivision that includes the cranial nerves, spinal nerves, and ganlia

PNS

4

clusters of neuron cell bodies located outside the CNS

ganglia

5

touch, pain, pressure, vibration, temperature, proprioception , and the special senses

considered voluntary (or conscious) functions of the "somatic sensory"

6

temperature and stretch of muscles of organ wall, transmit from blood vessels and viscera of internal organs to CNS

considered involuntary (or unconscious) functions of the "visceral sensory"

7

Example of becoming aware of visceral sensations when they are extreme

painful bloating of the stomach after eating too much

8

conducts nerve imppulses from CNS to skeletal muscles, causing them to contract

voluntary function of "somatic motor"

9

innervates internal organs and regulates smooth muscle, cardiac muscle, and glands

involuntary function of "autonomic motor"

10

condition caused by improper function of autonomic motor component, characterized by numerous problems (fainting/syncope, slow or fast HR, GI issues, thermoregulatory issues, visual blurring, and seizures)

dysautonomia

11

Two cell types that form nervous tissue

neurons vs. glial

12

excitable cells that initiate and transmit nerve impulses

neurons

13

nonexcitable cells that support and protect other cell type

glial cells

14

3 basic structural features all neurons share

-cell body
-dendrites
-axon

15

have high metabolic rate, extreme longevity, and most cease mitosis after fetal development

neurons