Nervous tissue

Question 1

Nerve cells are called

Answer 1

neurons

Question 2

Dendrites

Answer 2

(extension) impulses toward the cell body

Question 3

Schwann cells

Answer 3

axons and dendrites wraps in special cells

Question 4

Phospholipid insulates neurons from one another

Answer 4

myelin sheath

Question 5

Phagocytes ( eat bacteria) ;constantly moving

Answer 5

Microglia

Question 6

Contains the brain and spinal cord

Answer 6

Central Nervous System (CNS)

Question 7

Oligodendrocytes (neuroglia)

Answer 7

found on the brain and spinal cord ,no Schwann cells present

Question 8

small gap or space between. the axon of one neuron and dendrites or cell body

Answer 8

synapse

Question 9

neurolemma

Answer 9

outside of myelin sheath ; important if nerves are damaged

Question 10

What impulses from receptors to the CNS?

Answer 10

sensory neurons

Question 11

What takes the impulse from the CNS to effectors (muscles and gland)?

Answer 11

motor

Question 12

What supplies hips ,pelvic cavity and legs ?

Answer 12

lumbar and sacral

Question 13

Phrenic C3-C5

Answer 13

Diaphragm

Question 14

Radial C5-C8,T1

Answer 14

skin muscles ,forearm hand thumb & 1st 2 fingers

Question 15

Median C5-C8,T2

Answer 15

anterior arm and forearm and hand

Question 16

Ulnar C8,T1

Answer 16

medial arm , forearm , hand little finger and ring arm

Question 17

Intercostal T2-T12

Answer 17

intercostal and abdominal muscles ,skin of trunk

Question 18

Femoral L2-L4

Answer 18

anterior thigh , medial leg and foot

Question 19

Sciatic L4-S3

Answer 19

posterior thigh leg and foot

Question 20

meninges

Answer 20

vertebral canal; protect Brain and spinal cord

Question 21

Where does the spinal cord extend from ?

Answer 21

forearm magnum and occipital bone to the 1st and 2nd lumbar vertebrae

Question 22

What is the function and structure of gray matter ?

Answer 22

H- letter shaped :dorsal =horns enables individuals to control movement memory and emotions

Question 23

What conducts, process, and send nerve signal up and down the spinal cord?

Answer 23

White matter (myelinated axons and dendrites interneurons )

Question 24

Ascending

Answer 24

impulse to brain

Question 25

Descending

Answer 25

impulses away from brain

Question 26

What are the functions of the hypothalamus ?

Answer 26

• produce ADH ( kidney reabsorb H2o back into blood and maintains volume) & oxytocin(contraction uterus for L&D)
• releasing hormones GH stimulates anterior pituitary gland secret growth
• regulate body temp and food intake and body rhythms
• integration of ANS regulate organs
• stimulate visceral response during emotional situations