Dr Basel Sherif
Cardiac & Smooth muscle
1) Smooth muscle cells (fibers) have the following characters EXCEPT:
A) Are in cell to cell contact by gap junctions
B) Require calcium ions as activators of myosin - actin interaction
C) Striated and fusiform in shape
(D) They can synthesize and produce elastin
2) Atrial cardiac muscle cells characterized by the following EXCEPT :
A) Have fewer T tubules
B) Small in size the ventricular muscle cells
C) Contain many granules that cause Na diuresis and reduction in blood pressure
D) They have a triad at the Z-line
3) Each smooth muscle :
A) Has triad associated with its contraction
B) Has diad associated with its contraction
C) Possesses a single, centrally located nucleus
D) Is characterized by the absence of sarcolemma vesicles
4) which one of the following statements concerning cardiac muscle cell is true:
A) They are spindle shaped
B) They require external stimulus to undergo contraction
C) They have stem cells
D) They are joined together by intercalated disks
1
, Dr Basel Sherif
5) All the following are features of cardiac muscle EXCEPT:
A) The presence of smooth endoplasmic reticulum
B) The ability to regenerate following injury
C) The presence of myofibrils
D) The presence of innervation via the autonomic nervous system
6) Which of the following BEST characterizes a cardiac muscle cells :
A) Central nuclei
B) Small organized T tubules at Z line
C) Contain diads
D) All of the above
7) Each smooth muscle cell
A) Has triads associated with its contraction
B) Has diads associated with its contraction
C) Has cytoplasmic densities analogous to Z disks
D) Has no intermediate filaments
8) Cardiac muscle fibers have the following features EXCEPT :
A) They branch to form network
B) Contain one or 2 centrally located nuclei
C) Have a well developed triad
D) Contain glycogen granules at either pole of nucleus
2
Cardiac & Smooth muscle
1) Smooth muscle cells (fibers) have the following characters EXCEPT:
A) Are in cell to cell contact by gap junctions
B) Require calcium ions as activators of myosin - actin interaction
C) Striated and fusiform in shape
(D) They can synthesize and produce elastin
2) Atrial cardiac muscle cells characterized by the following EXCEPT :
A) Have fewer T tubules
B) Small in size the ventricular muscle cells
C) Contain many granules that cause Na diuresis and reduction in blood pressure
D) They have a triad at the Z-line
3) Each smooth muscle :
A) Has triad associated with its contraction
B) Has diad associated with its contraction
C) Possesses a single, centrally located nucleus
D) Is characterized by the absence of sarcolemma vesicles
4) which one of the following statements concerning cardiac muscle cell is true:
A) They are spindle shaped
B) They require external stimulus to undergo contraction
C) They have stem cells
D) They are joined together by intercalated disks
1
, Dr Basel Sherif
5) All the following are features of cardiac muscle EXCEPT:
A) The presence of smooth endoplasmic reticulum
B) The ability to regenerate following injury
C) The presence of myofibrils
D) The presence of innervation via the autonomic nervous system
6) Which of the following BEST characterizes a cardiac muscle cells :
A) Central nuclei
B) Small organized T tubules at Z line
C) Contain diads
D) All of the above
7) Each smooth muscle cell
A) Has triads associated with its contraction
B) Has diads associated with its contraction
C) Has cytoplasmic densities analogous to Z disks
D) Has no intermediate filaments
8) Cardiac muscle fibers have the following features EXCEPT :
A) They branch to form network
B) Contain one or 2 centrally located nuclei
C) Have a well developed triad
D) Contain glycogen granules at either pole of nucleus
2
