What is the anatomical name for the combination of cisternae and a transverse tubule?
A) sarcoplasmic reticulum
B) sarcolemma
C) triad
D) Z line
(
Question 2) What is the anatomical name for the tube-like structures that are open to the surface of the sarcolemma and form a portion of a triad?
A) cisternae
B) myofibril
C) sarcoplasmic reticulum
D) T-tubules
(
Question 3) Which of the following is a double-stranded protein that blocks actin-binding sites?
A) myosin
B) DNA
C) tropomyosin
D) troponin
(
Question 4) Which of the following is a globular protein that binds to calcium?
A) tropomyosin
B) troponin
C) actin
D) myosin
(
Question 5) What ion enters the muscle cell upon activation of the acetylcholine receptors?
A) sodium
B) calcium
C) potassium
D) chloride
(
Question 6) What is the group name for a motor nerve fiber and all the muscle fibers it stimulates?
A) motor end plate
B) myasthenia gravis
C) synaptic terminal
D) motor unit
(
Question 7) What is the name of the area of the sarcolemma that is associated with the neuromuscular junction?
A) junctional folds
B) synaptic terminal
C) synaptic cleft
D) motor end plate
(
Question 8) What structure of a sarcomere contains proteins that connect and stabilize thin filaments?
A) Z line
B) H band
C) I band
D) A band
(
Question 9) Which structure stores calcium ions for release in the muscle cell?
A) sarcolemma
B) sarcomere
C) sarcoplasm
D) sarcoplasmic reticulum
(
Question 10) What is the cell membrane of a muscle cell called?
A) sarcolemma
B) sarcomere
C) sarcoplasmic reticulum
D) sarcoplasm
Quick Reply
