Nervous System

Question 1

nerve cells

Answer 1

3 types of neurons

Question 2

Sensory neuron

Answer 2

wiring -> sense organ (receptor)
to brain and spinal cord

Question 3

motor neuron

Answer 3

wiring -> brain and spinal cord
——> effector organ (muscle or gland)
to

Question 4

Interneurons

Answer 4

location: brain and spinal cord
wiring -> transmits nerve impulses from sensory neurons to motor neurons

Question 5

Central Nervous System (CNS)

Answer 5

Brain and spinal cord

Question 6

PNS

Answer 6

Nerve outside the CNS

Question 7

The Brain

Answer 7

3 major types

Question 8

cerebrum

Answer 8

largest part, initiates all voluntary/conscious movements

Question 9

cerebellum

Answer 9

below and behind cerebrum, coordinates all motor activity and maintains the body’s balance

Question 10

Medulla

Answer 10

Base of brain and connects to the spinal cord, involuntary activities
ex: breathing, heart rate, blood pressure, peristalsis

Question 11

Spinal cord

Answer 11

the medulla is continuous with the spinal cord, spinal cord coordinates between brain and other body structures

Question 12

Sense receptors

Answer 12

Transmitted by sensory neurons to spinal cord
“throughout the body”

Question 13

Interneurons (second function of spinal cord)

Answer 13

transmits impulses to the brain
“within spinal cord”

Question 14

Brain

Answer 14

impulses carried to motor neurons throughout the spinal cord

Question 15

Spinal cord

Answer 15

to appropriate effectors - muscle or gland

Question 16

Peripheral nervous system (PNS)

Answer 16

all neurons both sensory and motor outside the CNS, carry impulses between the CNS and the rest of the body, two divisions:
Somatic and autonomic nervous systems

Question 17

Division 1: somatic NS

Answer 17

all nerves of voluntary muscles
sensory neurons that transmit from sensory receptors to the CNS

Question 18

Division 2: autonomic NS

Answer 18

all nerves of involuntary muscles
ex: smooth muscles, cardiac muscle, and glands

Question 19

Autonomic NS regulation

Answer 19

heart beat and circulation
respiration and peristalsis

Question 20

Behavior and the nervous system

Answer 20

two types

Question 21

Type 1: Habits

Answer 21

learned behavior that becomes automatic through repetition

Question 22

Type 2: reflexes

Answer 22

automatic inborn response. consists of a reflex arch having a Interneurons at the center of this reflex arch. Reflexes are generally protective in nature, allowing a rapid response to potentially dangerous stimulus

Question 23

Muscle

Answer 23

flex or relax

Question 24

Glands

Answer 24

secrete an enzyme or hormone