The human skull has 22 bones with ..................cranial bones and ............................ facial bones

1. 10,12                            2. 14,8

3. 12,10                            4. 8,14

Subtopic:  Number of Bone in Axial Skeleton |
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Which of the following has ATPase activity?

1. Actin                            2. Tropomyosin

3. Head of myosin             4. Troponin

Subtopic:  Skeletal Muscle: Myofilaments |
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The ATPase activity of the myosin head is dependent on:

1. Magnesium ions

2. Manganese ions

3. Calcium ions

4. Ferric ions

Subtopic:  Excitation Contraction Coupling I | Excitation Contraction Coupling II |
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Skeletal muscle bundles [fascicles] are held together by a common connective tissue layer called:

1. Perimysium

2. Endomysium

3. Fascia

4. Aponeurosis

Subtopic:  Skeletal Muscle: Basic Anatomy |
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The neurotransmitter released at the neuro-muscular junction is:

1. Adrenaline

2. Nor-adrenaline

3. Dopamine

4. Acetylcholine

Subtopic:  Excitation Contraction Coupling I |
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During muscle contraction, the length of all the following gets reduced except:

1. H-Zone

2. A-Band

3. I-Band

4. Sacromere

Subtopic:  Skeletal Muscle: Sarcomere |
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What is true about the white muscle fibers?

1. Myoglobin content is high

2. They have large number of mitochondria

3. They depend on anaerobic process for energy

4. They are adapted for slow sustained activities

Subtopic:  Muscle Contraction: Other Considerations |
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The human ribs are termed as bicephalic because:

1. They have two articulations surfaces on their ventral end

2. They have two articulations surfaces on their dorsal end

3.  They have two articulations surfaces on their ventral end and two on dorsal end

4. They have two articulations surfaces on their ventral end and one on dorsal end

Subtopic:  Sternum & Ribs |
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The clavicle articulated with the:

1. Xiphoid process of the sternum

2. Acromion of the scapula

3. Glenoid cavity of the scapula

4. Head of the humerus

Subtopic:  Appendicular Skeleton: Girdle |
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Hypocalcemia may lead to:-

1. Kidney stones
2. Cholelithiasis
3. Stronger muscle contractions
4. Tetany

Subtopic:  Muscle Contraction: Other Considerations |
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