Nervous System

Question 1

Quadriceps are also?

Answer 1

Knee extensions

Question 2

change in cell structure and function

from generalized to specialized.

Answer 2

Differentiation

Question 3

changes an organism

undergoes through time

Answer 3

Development

Question 4

n increase in size of all or part of the

organism.

Answer 4

Growth

Question 5

consists of the brain and spinal

cord

Answer 5

CNS

Question 6

consists of all

the nervous tissue outside the CNS

Answer 6

PNS

Question 7

T or F

Sensory -> PNS -> Motor-> CNS

Answer 7

F

Sensory -> CNS-> motor ->

Question 8

T or F

motor division is divided into somatic and autonomic systems.

Answer 8

T

Question 9

innervates cardiac muscle, smooth muscle, and glands and is

mostly under involuntary control.

Answer 9

Autonomic NS

Question 10

innervates skeletal muscle and is

mostly under voluntary control.

Answer 10

Somatic NS

Question 11

T or F
autonomic nervous system is divided into sympathetic and
parasympathetic divisions

Answer 11

T

Sympathetic-fight or flight
Parasympathetic- rest or digesting

Question 12

contains both sensory and motor

neurons, which can function independently of the CNS.

Answer 12

ENS

Question 13

What are the glial cells?

Answer 13

astrocytes, ependymal cells, microglia, oligodendrocytes, and Schwann cells.

Question 14

T or F

Neurons are multipolar, bipolar, or unipolar

Answer 14

T

Question 15

the support cells of the nervous system.

Answer 15

Glial Cells

Question 16

receive stimuli and conduct action potentials.

Answer 16

Neurons

consists of: Cell body, Dendrites and Axon

Question 17

Axons are either unmyelinated or myelinated

Answer 17

Myelin Sheaths

Question 18

forms the cortex and nuclei in the brain and ganglia in the PNS.

Answer 18

Gray Matter

Question 19

forms nerve tracts in the CNS and nerves in the PNS.

Answer 19

White Matter

Question 20

results from the charge difference

across the membrane of cells.

Answer 20

Resting Membrane Potential

Question 21

T or F
resting membrane potential is set by leak ion channels and
the sodium-potassium pump.

Answer 21

T

Question 22

occurs when the charge across the cell

membrane is briefly reversed

Answer 22

Action Potential

Question 23

Chemically gated and ________________ion channels generate the
action potential.

Answer 23

Voltage Gated

Question 24

the functional units of the nervous system.

Answer 24

Reflex Arcs

Question 25

T or F A simplest reflex arc consists of a sensory receptor, a sensory neuron, interneurons, a motor neuron, and an effector organ; the complex reflex arcs do not involve interneurons.

Answer 25

F Complex yung may INTERNEURONS Simplest NO INTERNEURON

Question 26

consists of | nerves and ganglia outside the CNS.

Answer 26

PNS

Question 27

brain and spinal cord

Answer 27

CNS

Question 28

has a central gray part organized into horns and a | peripheral white part forming nerve tracts

Answer 28

Spinal Cord

Question 29

The knee-jerk reflex occurs when the___________

Answer 29

quadriceps femoris muscle | is stretched.

Question 30

T or F | withdrawal reflex don't removes a body part from a painful stimulus.

Answer 30

F | it removes the body part

Question 31

the most | important branch of the cervical plexus.

Answer 31

phrenic nerve

Question 32

plexus supplies nerves to the upper limb.

Answer 32

Brachial plexus

Question 33

supplies nerves to the lower limb

Answer 33

lumbosacral plexus

Question 34

functions include involuntary and voluntary | movements

Answer 34

Somatic Motor

Question 35

has sympathetic and | parasympathetic divisions

Answer 35

autonomic nervous system

Question 36

Preganglionic cell bodies of the _______________lie in the | thoracic and upper lumbar regions of the spinal cord.

Answer 36

Symphathetic NS

Question 37

three types of neurons

Answer 37

Multipolar Bipolar Unipolar

Question 38

three parts of a neuron.

Answer 38

Cell body, Dendrites, Axon

Question 39

Main Components of NS

Answer 39

Central NS | Peripheral NS

Question 40

destroy both microbes and cellular debris.

Answer 40

Microglia | is a Phagocytes

Question 41

different | glial cells.

Answer 41

Astrocytes, Ependymal, Microglia, Shwann Cells, and Oligodendrites

Question 42

messenger at the synapse

Answer 42

neurotransmitters

Question 43

two or more neurons synapse with the same postsynaptic | neuron

Answer 43

converging | pathway

Question 44

the axon from one neuron divides and synapses | with more than one other postsynaptic neuron

Answer 44

diverging pathway

Question 45

e simplest reflex is the

Answer 45

stretch reflex

Question 46

AKA patellar reflex

Answer 46

knee-jerk reflex

Question 47

A reflex arc generally has five basic components:

Answer 47

(1)sensory receptor; (2) sensory neuron; (3) in some reflexes, interneurons, (4) motor neuron (5) effector organ

Question 48

AKA nerve cells receive stimuli, conduct action potentials, and transmit signals to other neurons or effector organs.

Answer 48

Neurons

Question 49

the nerves to | the diaphragm.

Answer 49

phrenic nerves

Question 50

T or F | The left phrenic nerve would be cut to paralyze the left side of the diaphragm.

Answer 50

T

Question 51

basic functional unit of the NS smallest pathway capable of receiving stimulus yielding response

Answer 51

Reflex arc

Question 52

basic anatomic unit

Answer 52

neurons

Question 53

neurons located between 2 communicating neurons connect spinal motor to sensory neurons

Answer 53

interneurons translate signals into stimulus

Question 54

ionic basis of RMP Na+ is more concentrated inside T or F?

Answer 54

F- outside yung Na+ | inside is K+

Question 55

rapid changes in the membrane potential that spreads rapidly along the fiber membrane

Answer 55

AP

Question 56

its function is to send impulse from one cell to another

Answer 56

nerve excitation or nerve impulses

Question 57

5 stages of AP

Answer 57

resting potential, threshold, rising phase, falling phase, recovery

Question 58

released in DESCENDING PATHWAY inhibitory

Answer 58

endorphins