Question

47. Concentric contractions occur when (A) the muscle produces a constant tension as it shortens; (D) tension and length of the muscle remain constant during a contraction: (C) tension in a muscio 15 man constant while the muscle increases in length; (D) the tension and the length of the muscle increuse s contraction; (E) the tension and the length of the muscle decrease during contraction. 48. Which of the following would contribute to muscular fatigue in the muscle fiber? (A) the emotional state of an individual, (B) depletion of ATP reserves; (C) inability of the motor neuron to produce sufficient quantities of acetylcholine; (D) depletion of neurotransmitter; (E) depletion of sodium ions. 49. Which of the following occurs in skeletal muscle during RECOVERY from strenuous exercise? (A) an elevated level of anaerobic metabolism; (B) depletion of reserves of creatine phosphate; (C) conversion of excess lactic acid to glucose and glycogen; (D) glycogen degradation to provide creatine: (E) oxygen depletion from hemoglobin. COLYTIC muscle fibers is TRUE? (A) They 10. Which of the following statements concerning FAST GLYCOL are well adapted to aerobic metabolism, atigue easily: (B) They have large deposits of myoglobin; (C) They are They have a slow contraction velocity: (E) They have very small dia mall diameters.
dont need explanation just want to compare my answers.

Answer 1

Answer 47:

There are three types of muscle contraction. They are:

(i) Concentric contraction: Here muscle cell shorten in size.

(ii) Isometric contraction: Muscle cell size remains same.

(iii) Eccentric contraction: In this case, muscle cell length increases.

Hence, correct choice is :

Concentric contractions occur when:

(A) the muscle produces a constant tension as it shortens.

Answer 48:

Muscle fatigue is caused due to :

(B) Depletion of ATP reserves.