Chapters 11 - 15

Question 1

Functions of Nervous System (5)

Answer 1

1. Maintaining Homeostasis
2. Receiving sensory input
3. Integrating (processing) info
4. Controlling muscles and glands
5. Establishing and maintaining mental activity (thinking, memory,emotion, consciousness)

Question 2

glial cells

Answer 2

assistant to nervous cells

Question 3

nerve

Answer 3

bundle of axons outside the brain and spinal cord

Question 4

ganglion

Answer 4

collection of neuron cell bodies outside the brain and spinal cord

Question 5

plexus

Answer 5

group of neurons found along spinal cord

Question 6

What are the 4 plexuses and their #s

Answer 6

Cranial - C1 -C5 (head and neck)
Brachial C5 - T1 (Upper arm)
Lumbar L1 - L4 (abdomen/lower
limb)
Sacral L4 - S4 (pelvis/lower limb)

Question 7

Divisions of the Nervous System

Answer 7

CNS central n.s
and
PNS peripheral n.s

Question 8

What does the CNS contain

Answer 8

Brain and spinal cord

Question 9

What does the PNS contain

Answer 9

nerves

Question 10

Afferent nerves

Answer 10

Send signals toward the brain and spinal cord from organs

Question 11

Efferent nerves

Answer 11

Carry signals away from brain to muscles and organs

Question 12

Glial cells of PNS

Answer 12

Schwann cells,
Satellite Cells

Question 13

The cortex of the brain is made of

Answer 13

Grey matter

Question 14

Grey matter

Answer 14

unmyelinated axons,
cell bodies, dentrites

Question 15

White matter

Answer 15

Myelinated axons

Question 16

Meninges of spinal cord

Answer 16

Dura mater- hard outer
Arachnoid mater- weblike
Pia mater- soft inner

Question 17

number of cranial nerves

Answer 17

12 pairs

Question 18

number of spinal nerves

Answer 18

31 pairs

Question 19

Sensory nerves

Answer 19

send signals to brain

Question 20

Motor nerves

Answer 20

carry message to organ/limb

Question 21

Visceral nerves

Answer 21

involuntary

Question 22

Somatic Nerves

Answer 22

voluntary

Question 23

Lobes of brain

Answer 23

Frontal,
Parietal
Temporal
Occipital

Question 24

Organization of spinal nerves

Answer 24

Cranial - 8 pairs
Thoracic - 12 pairs
Lumbar - 5 pairs
Sacral - 5 pairs
Coccygeal - 1 pair

Question 25

Reflex

Answer 25

Automatic response to a stimulus that occurs without conscious thought

Question 26

Reflex arc components

Answer 26

Sensory receptors > Sensory neuron > Interneuron > motor neuron > effector organ

Question 27

4 Major divisions of brain

Answer 27

Cerebrum Cerebellum Diencephalon Brain stem

Question 28

Medulla Oblongata

Answer 28

Pathway for ascending and descending nerve tracts; center for several important reflexes (heart rate, breathing, swallowing, vomitting)

Question 29

Hypothalamus

Answer 29

Major control center for maintaining homeostasis and regulating endocrine function

Question 30

Ventricles

Answer 30

fluid-filled cavities located within the brain and heart

Question 31

Fissure

Answer 31

Deep groves in the cerebral cortex that divide brain into lobes and hemispheres

Question 32

Vital Signs (4) and the normal ranges

Answer 32

Pulse 60 to 100 bpm B.P 120/80 Temperature 97.8-99.1 Respiratory rate 12 to 18 per minute

Question 33

Taste bud

Answer 33

supporting cells surrounding taste (gustatory) cells