Most muscle strains are caused by
a. abnormal muscle contraction.
b. muscle asymmetry.
c. a tear in an adjoining tendon.
d. bleeding into the muscle.
Option A is correct as the
abnormal muscle contraction is the most serious cause of the muscle strains in majority of persons like in athelets and who are involved in the heavy muscular activity like weight lefting.
Most muscle strains are caused by a. abnormal muscle contraction. b. muscle asymmetry. c. a tear...
in a single muscle twitch, the contraction period: A. is from start of contraction to the end. B. is from thr start of contraction to peak of contraction. C. is from the peak of contraction to the end D. is the peak of contraction
SPORT FIRST AID ASEP Unit 3: Anatomy and Sport Injury Terminology 1. Strains are to muscles what sprains are to ligaments. a. true O b. false 2. Rotator cuff muscles a. are located on the pelvis b. are located on the clavicle c. assist with kicking d. assist with throwing and swinging a racket e. a and c 3. What is a strong indicator of a Grade III muscle strain? O a. cool, clammy skin over the site of the...
In muscle, ATP hydrolysis, A. provides energy for contraction B. drives the power stroke C. allows the myosin head to bind to actin D. a and b E. a and c
1. A sudden stretch of a muscle excites a feedback system that opposes the stretch. This message starts in the ____. a. cerebellum b. Pacinian corpuscles c. muscle spindles d. dorsal root ganglion Activity of a muscle spindle is to ____ as activity of the Golgi tendon organ is to ____. a. contraction; inhibition of contraction b. contraction; contraction c. inhibition of contraction; contraction d. inhibition of contraction; inhibition of contraction Annamae is studying for a quiz on movement. She...
Which of the following would you use to inhibit the contraction of muscle in vitro as a control for an experiment you are conducting? (please answer with A, B, C, or D) A. a motor protein ATPase inhibitor B. a drug that increases T-tubule depolarization C. a drug that increases sarcoplasm Ca2+ concentration D. All would inhibit muscle contraction.
19. Label with letters/arrows: a. olecranon of ulna b. anconeus muscle c. supinator muscle d. pronator teres muscle (insertion) e. abductor pollicis longus muscle f extensor pollicis longus muscle g. extensor pollicis brevis muscle h. extensor indicis muscle i. tendon of insertion of extensor carpi ulnaris muscle (belly has been removed) tendon of insertion of extensor carpi radialis j. longus muscle tendon of insertion of extensor carpi radialis k. brevis muscle 1. carpal extensor retinaculum m. n. body of ulna...
1) Muscle contraction is initiated at the NMJ by the release of _______________ from synaptic vesicles. a. Epinephrine b. Acetylcholine c. Calcium d. Sodium 2) Which of the following types of muscle contractions describes force development with no change in the muscle’s length? a. isokinetic b. isometric c. concentric d. eccentric 3) Which of the following describes the ability of a muscle to contract repeatedly against an opposing force? a. Muscular Endurance b. Aerobic Endurance c. Muscular Strength d. Muscular...
The neurotransmitter acetylcholine (ACh) causes the rapid contraction of skeletal muscle and the slower relaxation of cardiac muscle. Which one of the following is the most likely explanation for this difference? A. ACh activates a GPCR pathway in cardiac muscle and an ion channel coupled receptor in skeletal muscle. B. ACh activates an ion channel coupled receptor in cardiac muscle and a GPCR pathway in cardiac muscle. C. ACh is permeable through the plasma membrane of skeletal muscle cells but...
1. When a muscle shortens during an active contraction, the: a. thick filaments get shorter b. thick filaments get shorter c. Z-lines move closer together d. titin molecules stretch to compensate
uestlon Which of the following hormones increases smooth muscle contraction |a) oxytocin b) T3 c) cortisol d) glucagon exchanged during normal breathing Question 110 (1 point) Water intoxication results in a) Decrease in water intake Ob) Decreased aldosterone secretion c) Increase in the osmolarity of interstitial fluids d) Osmosis of water from ECF to ICF e) Osmosis of water from ICF to ECF Submit Quiz 62 of 110 questions saved 373