Unit 3a

Question 1

Biopsychosocial believes we do the things we do because of

Answer 1

Our bodies
Our minds or thinking
The culture that we live in.

Question 2

Neurons

Answer 2

nerve cells

Question 3

Sensory neurons

Answer 3

Take messages from the body, up the spinal cord, to the brain

Question 4

Motor neurons

Answer 4

Take messages from the brain to the body

Question 5

Interneurons

Answer 5

Are neurons within the brain that “talk” to one another while thinking or processing information.

Question 6

Dendrites

Answer 6

Branching extensions that receive messages and conduct impulses towards the cells body

Question 7

Axons

Answer 7

Extension of a neuron through which messages pass to other neurons or muscle glands

Question 8

Myelin sheath

Answer 8

Fatty tissue around many fibers of the neuron, enables greater transmission speed

Question 9

The speed messages travel along neurons

Answer 9

between 2 and 200 mph

Question 10

Action potential

Answer 10

A brief electrical charge that travels down the axon

Question 11

Synapse

Answer 11

Gap between axon and dendrite

Question 12

Neurotransmitters

Answer 12

Chemical messengers that take the impulse of one neuron across the synaptic gap

Question 13

Reuptake

Answer 13

A neurotransmitter’s reabsorption by the sending neruon

Question 14

Antagonists

Answer 14

block neural transmission

Question 15

Central nervous system

Answer 15

The brain and spinal chord

Question 16

Peripheral nervous system

Answer 16

Sensory and motor neurons that connect the central nervous system

Question 17

Somatic nervous system

Answer 17

Part of the PNS that controls the body’s skeletal muscles

Question 18

Autonomic nervous system

Answer 18

Part of the PNS that controls the glands and muscles of internal organs

Question 19

Sympathetic nervous system

Answer 19

Part of ANS that arouses the body, making energy in stressful situations

Question 20

Parasympathetic nervous system

Answer 20

Part of ANS that calms the body

Question 21

Endocrine system

Answer 21

Set of glands that secrete hormones

Question 22

Hormones

Answer 22

Chemical messengers that effect our interest in sex, food, and aggression

Question 23

Adrenal gland

Answer 23

Secrete epinephrine

Increases the pulse, blood pressure, and blood sugar

Question 24

Epinephrine

Answer 24

Adrenaline

Question 25

Pituitary gland

Answer 25

Gland that regulates growth and controls other endocrine glands

Question 26

Master Gland

Answer 26

Pituitary gland

Question 27

Endorphins

Answer 27

Natural neurotransmitters linked with pain control and pleasure

Question 28

Threshold

Answer 28

Level of stimulation required to trigger a neural impulse

Question 29

Acetycholine

Answer 29

Enables muscle action, learning, and memory

Question 30

Dopamine

Answer 30

Influences movement, learning, attention, and emotion

Question 31

Seratonin

Answer 31

Affects mood, hunger, sleep, and arousal

Question 32

Norepinephrine

Answer 32

Helps control alertness and arousal

Question 33

GABA

Answer 33

A major inhibitory neurotransmitter

Question 34

Glutamate

Answer 34

Major excitatory neurotransmitter; involved in memory

Question 35

Nerve

Answer 35

Bundled axons that connect the CNS with muscles, glands, and sense organs