Exam 4 practice

Question 1

Which muscle cells are bifurcated in shape, short and striated?

Answer 1

Cardiac

Question 2

Which function oof the muscle tissue describes walking?

Answer 2

Produces body movements

Question 3

What is a thin connective tissue layer of collagen and reticular fibers that encases the individual muscle fibers inside each fascicle?

Answer 3

Endomysium

Question 4

Which contractile protein is responsible for generating the force that will pull on cellular structures within the myofibril, resulting in shortening or muscle contraction?

Answer 4

Myosin

Question 5

Which ions does the sodium-potassium pump move inside the cell?

Answer 5

Potassium

Question 6

Where are calcium ions located during a muscular contraction?

Answer 6

In the sarcoplasm

Question 7

Lactic acid that contributes to muscle fatigue results from the breakdown of the ….. during metabolism

Answer 7

Glucose

Question 8

The small motor units in the muscle will have smaller,___ motor neurons that are ___ firing first to their skeletal muscle fibers, which also tend to be the smallest

Answer 8

Lower threshold, more excitable

Question 9

____ fibers fatigue at a quicker rate

Answer 9

Glycolytic

Question 10

What kind of changes are primarily triggered in the muscle in response to the resistance training?

Answer 10

Muscular hypertrophic

Question 11

What is the insertion of the biceps brachial muscle?

Answer 11

Radius

Question 12

In a group of muscles that create a movement, the___ stabilizes the bones and prevents unwanted movements

Answer 12

Fixator

Question 13

According to the lever-fulcrum principle, muscles provide the___

Answer 13

Effort

Question 14

Which muscle straightens the leg?

Answer 14

Rectus femoris

Question 15

Which tongue muscle originates on the mandible and allows the tongue to move downward and forward?

Answer 15

Genioglossus

Question 16

Which muscle depresses the mandible in addition to elevating and pulling the hyoid bone anteriorly?

Answer 16

Geniohyoid

Question 17

Which of the following muscles are not a part of the abdominal muscles group?

Answer 17

Erector spinae

Question 18

Which group of erector spinae muscles is localized intermediately?

Answer 18

Longissimus

Question 19

Which muscle separates the thoracic and abdominal cavities and is dome shaped at rest?

Answer 19

Diaphragm

Question 20

What is the condition in which the median nerve is compressed which can result in painful or numb sensations in the hand, loss of grip and strength in the hand, or a combination of those symptoms?

Answer 20

Carpal tunnel syndrome

Question 21

Which muscle serves as a common site for intramuscular injection due to the thickness of the muscle reich blood supply which promotes faster absorption, and lack of major nerves and blood vessels within the belly of the muscle?

Answer 21

Gluteus medius

Question 22

Which group of muscles is responsible for hip extension and knee flexion?

Answer 22

Hamstrings

Question 23

Which muscle is found on the lateral surface of the tibia and produces dorsiflexion in addition to inversion?

Answer 23

Tibialis anterior

Question 24

Which muscle cells are cylindrical in shape, long, and striated?

Answer 24

Skeletal

Question 25

Which characteristic of the muscle tissue allows an electrical wave called an action to move along the entire length of the muscle cell resulting in muscle contraction?

Answer 25

Excitability

Question 26

What is the rope shaped connective tissue that ties muscles to bone?

Answer 26

Tendon

Question 27

What is the contractile unit of myofibrils?

Answer 27

Sarcomere

Question 28

Which ions does the sodium-potassium pump move inside the cell?

Answer 28

Potassium

Question 29

What happens after the voltage activated calcium gated channels open and calcium ions rush into the axon terminal?

Answer 29

Acetylcholine is released into the synaptic cleft

Question 30

Which mechanism of the ATP production uses the breakdown of glucose or other nutrients in the presence of oxygen to produce carbon dioxide, water, and ATP?

Answer 30

Aerobic respiration

Question 31

Which type of muscle fibers fatigue more quickly than the others because anaerobic glycolysis produces less ATP per glucose molecule than aerobic respiration?

Answer 31

Fast glycolytic fibers

Question 32

What is the name of the age related muscular atrophy?

Answer 32

Sarcopenia

Question 33

What is the insertion of the biceps brachial muscle?

Answer 33

Radius

Question 34

In a group of muscles that create a movement, the ___ works together with the prime mover

Answer 34

Synergist

Question 35

Which class of levers is used when raising yourself on your toes where the force is applied through the Achilles tendon in the heel?

Answer 35

Second class lever

Question 36

What is the shape of the most skeletal muscles in the body?

Answer 36

Parallel

Question 37

Which muscles fascicles run at an angle to the midline of the body?

Answer 37

Oblique

Question 38

Which tongue muscle originates on the Styloid bone and allows upward and backward motion?

Answer 38

Styloglossus

Question 39

Which muscle elevates the larynx’s thyroid cartilage?

Answer 39

Thyrohyoid