BIOLOGICAL BASIS OF BEHAVIOR

Question 1

• Controls bodily activities and behavioral
  responses.
• Composed of 100 billion neurons.

Answer 1

NERVOUS SYSTEM

Question 2

Brain and spinal cord.

Answer 2

Central Nervous System (CNS)

Question 3

Nerve fibers connecting the CNS to receptors and
effectors.

Answer 3

Peripheral Nervous System (PNS)

Question 4

The basic structural and functional unit
of the nervous system.

Answer 4

NEURON

Question 5

Central portion with a nucleus.

Answer 5

Cell Body (Cyton)

Question 6

Receive nerve impulses and carry them to the cell body.

Answer 6

Dendrites

Question 7

Sends messages away from the cell body; covered by a myelin sheath.

Answer 7

Axon

Question 8

Carry messages from sense organs
to the CNS.

Answer 8

Sensory Neurons

Question 9

Carry messages from the brain to
muscles/glands.

Answer 9

Motor Neurons

Question 10

Carry messages within the CNS.

Answer 10

Inter-Neurons

Question 11

React to external stimulation

Answer 11

Irritability

Question 12

Transmit nerve impulses through
nerve fibers.

Answer 12

Conductivity

Question 13

Electrical signals created by stimuli, known as
action potentials.

Answer 13

Nerve Impulse

Question 14

A juncture between neurons where neurotransmitters are released, allowing nerve
impulse transmission.

Answer 14

Synapse

Question 15

Neurons either react fully or not at all.

Answer 15

All or Nothing Law

Question 16

Nerve impulses only travel in one
direction between neurons.

Answer 16

Law of Dynamic Polarity

Question 17

Controls and directs all nervous system activities

Answer 17

Brain

Question 18

Pathway for transmitting messages to and from the brain, controlling reflexes.

Answer 18

Spinal Cord

Question 19

Seat of consciousness; responsible for
higher mental activities.

Answer 19

Cerebrum

Question 20

Relay center for impulses.

Answer 20

Thalamus

Question 21

Regulates body systems and emotions;
works with the endocrine system.

Answer 21

Hypothalamus

Question 22

Links sensory and motorpathways; involved in auditory and visual activities.

Answer 22

Midbrain

Question 23

Maintains balance, posture, and voluntary motor
activities.

Answer 23

Cerebellum

Question 24

Regulate involuntary functions
(heartbeat, breathing).

Answer 24

Pons and Medulla Oblongata

Question 25

Controls voluntary skeletal movements.

Answer 25

Somatic System

Question 26

(a) Controls involuntary actions, divided into: (b)

Answer 26

(a) Autonomic System (b) Sympathetic, Parasympathetic

Question 27

- Works with the nervous system to maintain homeostasis. - Hormones are secreted by ductless glands and regulate behavior by maintaining biochemical balance.

Answer 27

ENDOCRINE SYSTEM