Ch. 4,5,6,7

Question 0

Peripheral Nervous System (PNS)

Answer 0

-Get info to CNS
-Somatic (skeletal muscles)
-Autonomic (glands, blood vessels, organs)
•Sympathetic (on switch)
•Parasympathetic (off switch)

Question 1

Central Nervous System (CNS)

Answer 1

Brain and spinal chord

Question 2

Neuron

Answer 2

• Conduct electricity

- Basic unit of nervous system

Question 3

Gila

Answer 3

• Support, nurture, and insulate neurons

- Remove debris when neurons die

Question 4

Dendrites

Answer 4

• Neurons branches (fingers)

- Receive an transmit info

Question 5

Cell body

Answer 5

Keep it alive (palm)

Question 6

Axon

Answer 6

• Extended fiber (wrist)

- Conducts impulses and transmits them

Question 7

Node

Answer 7

Constrictions in myelin sheath (bracelets)

Question 8

Myelin sheath

Answer 8

Surrounds axon (arm)

Question 9

Axon terminals

Answer 9

Where the impulse goes through to get to the synaptic ends (other fingers)

Question 10

Synaptic end bulbs

Answer 10

Where the impulse is transmitted

Question 11

Synapse

Answer 11

-The site where transmission occurs
Includes:
    • axon terminal
    • synaptic cleft (space)
    • receptor sites in receiving
      membrane

Question 12

Action potential

Answer 12

Electrical impulse

Question 13

Neurotransmitter

Answer 13

Chemical released by the transmitted neuron that alters activity of receiving

Question 14

Plasticity

Answer 14

Brains ability to adapt to change due to experience

Question 15

Endorphins

Answer 15

Chemicals in the nervous system involved in pain reduction, pleasure, and memory (endogenous opioid peptides)

Question 16

Hormones

Answer 16

Chemicals released by glands (organs) that affect how other organs function

Question 17

Endocrine glands

Answer 17

Produce hormones into the blood stream

Question 18

Melatonin

Answer 18

Hormone from pineal gland involved in regulating daily rhythms

Question 19

Oxytocin

Answer 19

-Hormone from pituitary gland
     •both sexes attachment and trust
       In relationships
     •women child birth contractions and 
      And milk production

Question 20

Adrenal hormones

Answer 20

Hormones from adrenal gland involved in emotion and stress

Question 21

Sex hormones

Answer 21

• Hormones involved in development and function of reproductive organs. Development of male and female sexual characteristics
• androgens, estrogens, and progesterone

Question 22

Electroencephalogram (EEG)

Answer 22

Recording of neural activity by electrodes

Question 23

Transcranial magnetic stimulation (TMS)

Answer 23

Stimulating brain cells by a wire coil on head to temporary inactive neural circuits or for therapy

Question 24

PET scan (positron-emission tomography)

Answer 24

Injection of radioactive element to analyze biochemical activity in the brain

Question 25

MRI (magnetic resonance imaging)

Answer 25

Magnetic fields and special radio receivers used to study body and brain tissues

Question 26

Localization if function

Answer 26

Specialization of certain brain areas for certain functions (Joseph gall)

Question 27

Hindbrain

Answer 27

Medulla: vitals Pons: regulates your sleep cycles Cerebellum: fine motor coordination (reflexes)

Question 28

Brain stem

Answer 28

Top of spinal cord has medulla and pons

Question 29

Reticular activating system (RAS)

Answer 29

Network of neurons in core of brain stem, arouses cortex and screen incoming info

Question 30

Midbrain

Answer 30

Relay

Question 31

Forebrain

Answer 31

Thalamus: traffic cop Hypothalamus: primitive motivation Cerebral cortex