5 Written Questions
5 Matching Questions
- Which of the following is not a connective tissue sheath that wraps individual muscle fibers?
- Hypothetically, if a muscle were stretched to the point where thick and thin filaments no longer overlapped, ________.
cross bridge attachment would be optimum because of all the free binding sites on actin
ATP consumption would increase because the sarcomere is "trying" to contract
maximum force production would result because the muscle has a maximum range of travel
no muscle tension could be generated
- How is acetylcholine (ACh) removed from the synaptic cleft?
A) acetylcholinesterase (AChE; an enzyme)
B) diffusion away from the synaptic cleft
C) a reuptake pump on the axon terminal
- What is the functional unit of a skeletal muscle called?
- Muscle tone is ________.
- a B
- b no muscle tension could be generated
- c a state of sustained partial contraction
- d aponeurosis
- e sarcomere
5 Multiple Choice Questions
- A) eccentric
- diffusion of Ca2+ into the axonal terminus
- B) smooth muscle
- lactic acid
5 True/False Questions
What is the name given to the regularly spaced infoldings of the sarcolemma? → hydrolysis of ATP
What means of membrane transport is used to release the neurotransmitter into the synaptic cleft? → Exocytosis
Duchenne muscular dystrophy could theoretically be cured if a technique was developed that would _________.
A) strengthen the dystrophin proteins that are present in the patient's muscle fibers
B) double the existing number of dystrophin molecules in the patient's muscle fibers
C) strengthen the thick and thin filaments in the patient's muscle fibers
D) none of the above → smooth
Binding of acetylcholine to its receptor opens _______ that allow Na+ and K+ to diffuse across the sarcolemma. → Chemically gated ion channels
Skeletal muscle cells are multinucleated → True