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level: Muscle Types

Questions and Answers List

level questions: Muscle Types

Question	Answer
Muscle cells of each of the three types of muscle tissue (smooth, skeletal, cardiac) are elongated and therefore, referred to as _____ _____.	muscle fibers
Muscle type: Nonstriated	Smooth muscle cells
Muscle type: Striated	Skeletal and Cardiac muscle cells
Muscle type: Spindle-shaped	Smooth muscle cells
Muscle type: Elongated, branching	Cardiac muscle cells
Muscle type: One central nucleus per cell	Smooth muscle cells
Muscle type: Multinucleated, peripheral nuclei	Skeletal muscle cells
Muscle type: One central nucleus (occasionally two per cell)	Cardiac muscle cells
Identify the muscle types	Answer
True/False Smooth muscle tissue is comprised of cells that are voluntary and lack striations.	False. INVOLUNTARY.
Smooth muscle tissue occurs in what systems/organs of the human body?	Digestive system Blood vessels Urinary bladder Bronchi Bronchioles Capsules of some organs
Smooth muscle is under control of the _______ nervous system.	autonomic
"Smooth" from the smooth muscle tisue is derived from the fact that the cells lack ________, so that the cytoplasm looks uniform rather than striped.	cross-striations
The cells of smooth muscle tissue is small compared to skeletal and cardiac muscle cells.	True
True/False: Cardiac muscle tissue forms the pericardium of the heart and occurs in the walls of the major vessels that carry blood to and from the heart (aorta, pulmonary artery and vein, vena cava)	False. MYOCARDIUM of the heart.
True/False: In Cardiac muscle tissue, the occurrence of of centrally located nucleus is mostly be seen, however, a cell with 2 nuclei may be seen.	True
Unlike skeletal or smooth muscle cells, cardiac muscle cells branch and ______ with one another.	anastomose = to connect between two passageways, such as two river channels or plumbing pipes.
True/False: Cardiac muscle, found in the walls of the heart, is also under control of the autonomic nervous system.	True
The cardiac muscle is circular in shape.	False. RECTANGULAR in shape.
How do you describe the contraction of the cardiac muscle?	involuntary, strong, rhythmical
Skeletal muscle tissue is also found in what organs?	Tongue, pharynx, anal canal, muscles that move eyes
The peripheral portion of the _____ nervous system controls the skeletal muscles. Thus, these muscles are under conscious, or ______ control.	central, voluntary
True/False: Muscle fibers of the skeletal muscle are striated (having transverse streaks) and each acts independently of neighboring muscle fibers.	True
Identify the parts of skeletal muscle tissue	Answer
True/False: Cross-striations result from the precise registration of the A, I bands, H zone, and M line of the myofibrils within the cells.	True