Multiple Choice
What layer of connective tissue surrounds and separates muscle fibers?
9. Muscle Tissue
Structure of a Skeletal Muscle
Back9. Muscle Tissue
Structure of a Skeletal Muscle
- Multiple Choice
A fascicle is a bundle of:
- Multiple Choice
The plasma membrane of a muscle fiber is called the ____________ and it wraps bundles of ____________.
- Multiple Choice
True or False: if false, chose the answer that corrects the statement.
The smallest contractile unit of a muscle is the muscle cell.
- Multiple ChoiceWhich type of skeletal muscle contains abundant quantities of glycogen?
- Multiple ChoiceAn entire skeletal muscle is surrounded by __________.
- Multiple ChoiceWhich of the following statements is INCORRECT?
- Multiple ChoiceWhere does 95% of the energy needed for contraction come from during moderate exercise?
- Open QuestionThe connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called thea. epimysium,b. perimysium,c. endomysium,d. periosteum.
- Open QuestionA fascicle is aa. muscle,b. bundle of muscle fibers enclosed by a connective tissue sheath,c. bundle of myofibrils,d. group of myofilaments.
- Open QuestionThick and thin myofilaments have different compositions. For each descriptive phrase, indicate whether the filament is,a. thick orb. thin._____(1) contains actin_____ (2) contains ATPases_____(3) attaches to the Z disc_____(4) contains myosin_____(5) contains troponin_____(6) does not lie in the I band
- Open QuestionThe function of the T tubules in muscle contraction is toa. make and store glycogen,b. release Ca²⁺ into the cell interior and then pick it up again,c. transmit the action potential deep into the muscle cells,d. form proteins.
- Open QuestionTrue or false: Most muscles contain a predominance of one skeletal muscle fiber type. Explain the reasoning behind your choice.
- Open Question
The primary action of the biceps brachii muscle of the anterior arm is to flex the forearm at the elbow. However, when this muscle is inflamed, pain is felt in the shoulder. Explain this finding.
- Open Question
Which of the following types of muscle fibers have low myosin ATPase activity and are classified as slow-twitch?
a. Type I fibers
b. Type IIa fibers
c. Type IIx fibers
d. Type III fibers