Muscle, Nervous System

Question 1

Type of muscle is involuntary, possesses striations, and demonstrates an intermediate twitch?

Answer 1

Cardiac

Question 2

Which connective tissue membranes surrounds each fascicle?

Answer 2

Perimysium

Question 3

Refers to The contractile unit of a muscle and extends from Z disc to Z disc

Answer 3

Sarcomere

Question 4

Filament is made up of __?

Answer 4

Actin

Question 5

Blocks the myosin binding sites on actin during periods of rest

Answer 5

Tropomyosin

Question 6

Depolarization of the sarcolemma is the result of __ ions rushing into the muscle cell membrane

Answer 6

Na (sodium)

Question 7

All muscles controlled by a single motor neuron

Answer 7

Motor unit

Question 8

Contractions that permit the muscle to shorten

Answer 8

Concentric

Question 9

During a typical myogram, the contraction period corresponds to ___.

Answer 9

Increasing calcium levels

Question 10

Division of the nervous system often called the “rest and digest” division & is characterized by the three Ds: digestion, diuresis, and defecation

Answer 10

Parasympathetic

Question 11

Neuroglial cells that regulate the environment around the cell body of a neuron in the CNS (blood brain barrier)

Answer 11

Astrocyte

Question 12

The process of a neuron that typically receives impulses from adjacent neurons

Answer 12

Dendrite

Question 13

The outer layer of a Schwann cell where all the cytoplasm and organelles are located

Answer 13

Axolemma

Question 14

The period after an initial stimulus has been received and when the neuron is not sensitive to another stimulation

Answer 14

Refractory period

Question 15

Ion that enters the axon terminal to stimulate the release of neurotransmitters by exocytosis

Answer 15

Ca (calcium)

Question 16

How many pairs of spinal nerves do humans have?

Answer 16

31

Question 17

Which nerve innervates the adductor muscles on the medial surface of the thigh?

Answer 17

Saphenous

Question 18

A dense layer of collagen fibers that surround the entire muscle

Answer 18

Epimysium

Question 19

A delicate connective tissue that surrounds each individual skeletal muscle cell

Answer 19

Endomysium

Question 20

Formed when collagen fibers of the connective tissue merge together to form a bundle

Answer 20

Tendon

Question 21

Formed when collagen fibers of the connective tissue merge together to form a broad sheet

Answer 21

Aponeurosis

Question 22

Groups of embryonic cells

Answer 22

Myoblasts

Question 23

The cytoplasm of a muscle cell

Answer 23

Sarcoplasm

Question 24

The plasma membrane of a muscle cell

Answer 24

Sarcolemma

Question 25

For passageways through the muscle cells allowing electrical impulses to travel into the cells interior

Answer 25

Transvers (T) Tubules

Question 26

The dense region of the sarcomere that contains overlapping thick and thin filaments (both myosin and actin)

Answer 26

A band

Question 27

On either side of the A band, only contains thin filaments (actin)

Answer 27

I band

Question 28

In the middle of each A band, contains only think filaments (myosin)

Answer 28

H band

Question 29

In the middle of each H band

Answer 29

M band

Question 30

Mark the boundary between adjacent sarcomeres. Consist of proteins called actinins.

Answer 30

Z lines