Task 1

Question 1

central nervous system

Answer 1

consists of the brain and the spinal cord

Question 2

peripheral nervous system

Answer 2

consists of somatic nervous system and autonomic nervous system

Question 3

autonomic nervous system

Answer 3

regulates the body’s internal enviroment

Question 4

somatic nervous system

Answer 4

interacts with the external enviroment

Question 5

afferent nerves

Answer 5

carry sensory signal towards the central nervous system and

Question 6

efferent nerves

Answer 6

carry motor signals from the central nervous system towards skeletal muscles and organs

Question 7

sympathetic nerves

Answer 7

controls the body’s responses to a perceived threat and is responsible for the “fight or flight” response. Is part of the autonomic nervous system’s efferent nerves

Question 8

parasympathetic nervous system

Answer 8

controls homeostasis and the body at rest and is responsible for the body’s “rest and digest” function. Is part of the autonomic nervous system’s efferent nerves.

Question 9

blood-brain barrier

Answer 9

Mechanism that impedes the passage of toxic substances from blood to the brain. In the brain the cells of the cerebral blood vessel walls are tightly packed, forming a barrier to the passage of many molecules

Question 10

dendrites

Answer 10

Transmit impulses from synapses to the cell body

Question 11

axons

Answer 11

Carry the impulse away from the cell body

Question 12

proximal

Answer 12

close

Question 13

distal

Answer 13

far

Question 14

different sections of the brain (slices)

Answer 14

horizontal, frontal, sagittal sections ( and cross section: is cut at a right angle to any long, narrow structure)

Question 15

gray matter

Answer 15

composed largely of cell bodies and unmyelinated interneurons

Question 16

white matter

Answer 16

composed largely of myelinated axons

Question 17

Brainstem

Answer 17

medulla+pons+midbrain

Question 18

medulla (myelencephalon)

Answer 18

Is composed of tracts that carry signals between the brain and the body+ reticular formation

Question 19

reticular formation

Answer 19

consists of 100 nuclei that are involved in a variety of functions: movement, sleep, attention, reflexes and muscle tone.

Question 20

pons

Answer 20

tracts+ reticular formation (same things as medulla)

Question 21

midbrain

Answer 21

Also mesencephalon. Is the tectum+ tegmentum.

Question 22

metencephalon

Answer 22

pons + cerebellum

Question 23

cerebellum

Answer 23

important sensorimotor structure

Question 24

tectum

Answer 24

visual and auditory function

Question 25

tegmentum

Answer 25

reticular formation + mediating analgesic (pain reducing) effects if drugs + sensorimotor system function

Question 26

diencephalon

Answer 26

thalamus + hypothalamus

Question 27

tract

Answer 27

a bundle of axons found within the central nervous system