Muscles
What is the source of the ATP used by muscles for vigorous activity that may last for 10–15 s?
Glycolysis of glucose in the cell cytoplasm forms ATP.
The ATP that is stored in muscle cells as ATP.
Aerobic respiration in the mitochondria produces the ATP.
Creatinine phosphate in muscle and ADP reacts to form the required ATP.
Creatinine phosphate in muscle and ADP reacts to form the required ATP.
Creatinine phosphate is used to “recharge” the ADP that forms from ATP when the cross-bridge is energised.
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Which of the following is the smallest unit in a muscle?A. Muscle fibre
B. Myosin
C. Fasciculus
D. Myofibril
What structures attach a muscle to a bone?
A. A tendon
B. A fasciculus
C. A sarcomere
D. An internal intercostal
Which muscle is located on the posterior part of the forearm?
A. Flexor digitorum superficialis
B. Flexor digitorum profundus
C. Extensor digitorum
D. Triceps brachii
Which of the following muscles is NOT named after its location in the body?
A. Deltoid
B. Extensor carpi ulnaris
C. Rectus abdominis
D. Biceps femoris
Which of the following muscles IS named after its location in the body?
A. Sartorius
B. Triceps brachii
C. Soleus
D. Trapezius
Which is the correct equation for anaerobic respiration in humans?
A. Glucose + lactic acid → carbon dioxide + water
B. Glucose → lactic acid + carbon dioxide
C. Glucose → lactic acid + (little energy)
D. Glucose→ lactic acid
The part of a skeletal muscle cell that is able to contract is called
A. Sarcoplasm
B. Sarcolemma
C. Sarcomere
D. Sarcoplasmic reticulum
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