Anatomy

Question 1

Spinal Cord

Answer 1

• receives/processes sensory info (from skin/joints/muscles)

- controls movements (limb/trunk)

Question 2

Grey Matter

Answer 2

nerve cell bodies

Question 3

White Matter

Answer 3

ascending and descending tracts of myelinated axons

Question 4

Brain Stem

Answer 4

• receives sensory info (skin/muscles-head/neck/face)
• provides motor control (muscles)
• site of entry for info from hearing/balance/taste
• mediates parasympathetic reflexes
• conveys info from spinal cord brain)
• regulates levels of arousal/awareness

Question 5

Cerebellum

Answer 5

• important for maintain posture and coordination of movement (btwn head/eyes/limbs)
• critical in learning motor skills
• connects w/ cerebral cortex
• involved w/ language

Question 6

Diencephalon

Answer 6

• thalamus (processes most info reaching cerebral cortex)

- hypothalamus (regulates homeostasis/autonomic/endocrine/visceral functions

Question 7

Frontal Lobe

Answer 7

• short-term memory

- planning future actions (control of movement)

Question 8

Parietal Lobe

Answer 8

• somatic sensation
• forming body image
• relating to extrapersonal space

Question 9

Occipital Lobe

Answer 9

vision

Question 10

Temporal Lobe

Answer 10

• hearing

- deeper regions (hippocampus & amygdaloid) w/ learning/memory/emotion

Question 11

Afferent Neuron

Answer 11

• sensory/receptor

- Dorsal

Question 12

Efferent Neuron

Answer 12

• motor/effector

- Ventral

Question 13

Peripheral Nervous System (PNS)

Answer 13

• Sensory

- Motor

Question 14

Sensory (PNS)

Answer 14

• Somatic (touch/pain/pressure/vibration)

- Visceral (stretch/pain/temp/chem changes)

Question 15

Motor (PNS)

Answer 15

• Somatic (motor innervation - all skeletal muscles

- Autonomic (motor innervation - smooth muscle/cardiac muscle/glands)

Question 16

Autonomic Nervous System

Answer 16

• Sympathetic

- Parasympathetic

Question 17

Cortex

Answer 17

-thin sheet neurons (usually at brain surface)

Question 18

Nucleus

Answer 18

-mass of neurons (deep in brain)

Question 19

Substantia

Answer 19

-group of related neurons (usually less distinct borders than those w/nuclei)

Question 20

Locus (Loci)

Answer 20

• small well-defined
• brain stem cell group
• involved in control of wakefulness/behavioral arousal

Question 21

Ganglion (ganglia)

Answer 21

-neuron collection in PNS

Question 22

Nerve

Answer 22

• bundle of axons in PNS

- optic nerve (CNS)

Question 23

Tract

Answer 23

• CNS axons

- common site of origin & destination

Question 24

Bundle

Answer 24

• axons run together

- don’t have same origin/destination

Question 25

Capsule

Answer 25

-axons connect the cerebrum w/ brain stem

Question 26

Commissure

Answer 26

-axons connect one side of brain to other

Question 27

Lemniscus

Answer 27

-tract meanders through brain (ribbon-like)