Instructor Date: Section/Group: SUPPLEMENTARY EXERCISES Post-Lab Quiz . A fascic

Question

Instructor Date: Section/Group: SUPPLEMENTARY EXERCISES Post-Lab Quiz . A fascicle is surrounded by: a. perimysium. b. endomysium. c. sarcomysium. d. epimysium. 2. A single muscle cell is called a. myofibril. b. sarcomere. c. muscle fiber. d. myofilament. Which of the following statements regarding tendons is NOT true? a. Tendons are dense regular connective tissue. b. Tendons are heavy in collagen fibers. c. Tendons connect muscles to bones d. A rope-like tendon is called an aponeurosis 3. 4. Which of the following pairs is not correctly matched? a. Sarcolemma-muscle fiber plasma membrane b. Transverse tubule-holds high calcium concentration c. Mitochondria-produce ATP for muscle contractions d. Sarcomere-function unit of the myofibril Which of the following pairs is not correctly matched? a. I band-contains only thin filaments b. Z disc-marks the middle of the sarcomere c. Hzone-contains only thick filaments d. A band-light central region of sarcomere 5. Chapter 3 Skeletal Muscle Physiology 89

Explanation / Answer

Answer:-1 (a) Perimysium

Explanation-

Perimysium is a type of connective tissue which surrounds the muscle fasicle.

Answer:-2 (c) muscle fibre

Explanation-

Muscle fiber refers to the single unit of the muscle cell. These muscle fibers are formed of myofibrils.

Answer:-6 (a) sarcomere

Explanation-

Myofibril are component of skeletal muscles which are formed by the repeating units of sarcomere.

Answer:-8 (b) axon terminal

Explanation-

Axon terminal is the distal portion of the motor neuron which forms neuron portion of the neuromuscular junction.

Answer:-9 (b) acetylcholine

Explanation-

Several neurotransmitters such as acetylcholine are found inside the synaptic vesicles. These neurotransmitters are released at the synapse and this release is regulated by the voltage-gated calcium channel.

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