Exam 4

Question 1

Which of these phrases most aptly describes “muscle insertion”?

Answer 1

Tendon attachment that moves.

Question 2

Which of these muscles is a member of the quadriceps group?

Answer 2

• vastus lateralis
• vastus medialis
• rectus femoris
• vastus intermedius
  ALL OF THE ABOVE

Question 3

Which of the following is a member of the hamstring group?

Answer 3

• semimembranosus
• biceps femoris
• semitendinosus
  ALL OF THE ABOVE

Question 4

Which of the following is NOT a muscle of the rotator cuff?

Answer 4

Subclavius

Question 5

A muscle that inserts on the body of the mandible is probably involved in..?

Answer 5

Chewing

Question 6

The cytoplasm of the neuromuscular terminal contains vesicles filled with molecules of the neurotransmitter?

Answer 6

Acetylcholine

Question 7

In response to action potentials arriving along the transverse tubules, the sarcplasmic reticulum releases ?

Answer 7

Calcium ions

Question 8

Each skeletal muscle fiber is controlled by a motor neuron at a single..?

Answer 8

Neuromuscular junction

Question 9

Interactions between actin and myosin filaments of the sarcomere are responsible for ..?

Answer 9

Muscle contraction

Question 10

The repeating unit of a skeletal muscle fiber is the ?

Answer 10

Sarcomere

Question 11

Which of the following best describes the term sarcoplasmic reticulum?

Answer 11

Storage and release site for calcium ions

Question 12

Which of the following is a recognized function of the skeletal muscle?

Answer 12

-maintain posture
- produce movement
-guard body entrances and exits
- maintain body temperature
ALL OF THE ABOVE