There are 8 and 7 bones respectively in:

1. tarsal [ankle] and carpal [wrist]
2. carpal[wrist] and tarsal[ankle]
3. neurocranium and facial skeleton
4. facial skeleton and neurocranium

Subtopic:  Appendicular Skeleton: Upper Limb |
 85%
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Identify the correct characteristic of a skeletal muscle:
1. spindle-shaped cells
2. involuntary control
3. true syncytium
4. non striated

Subtopic:  Skeletal Muscle: Basic Anatomy |
 66%
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A muscle fasciculus is surrounded by:

1. perimysium 2. endomysium
3. epimysium 4. hypomysium
Subtopic:  Skeletal Muscle: Basic Anatomy |
 55%
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Arrange the given structures in relation to a skeletal muscle in descending order of their size:

a. whole muscle
b. muscle fiber (cell)
c. myofilament
d. myofibril
e. muscle fasciculus

1. a, b, e, c, d 2. a, b, e, d, c
3. a, e, b, c, d 4. a, e, b, d, c
Subtopic:  Skeletal Muscle: Basic Anatomy |
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The correct statement regarding myofibril would be:

1. It is the name for a muscle cell.
2. It contains sarcoplasmic reticulum.
3. It is made up of many sarcomeres.
4. It is a bundle of muscle cells.
Subtopic:  Skeletal Muscle: Sarcomere |
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Myosin myofilaments are

1. made up of thick and thin myofilaments.

2. found only in the H zone.

3. not seen in the H zone.

4. attached to filaments that form the M line.

Subtopic:  Skeletal Muscle: Myofilaments |
 59%
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Identify the correct statement:

1. Tropomyosin is found in two forms – monomeric G and polymeric F.

2. The head of the myosin molecule binds to an active site on G actin.

3. ATPase is present in troponin A.

4. Actin molecules do not move during muscle contraction.

Subtopic:  Skeletal Muscle: Myofilaments |
 59%
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The extensions of the cell membrane that penetrate into the centre of skeletal and cardiac muscle cells are called as:

1. transverse tubule system 2. sarcoplasmic reticulum
3. myofibrils 4. terminal cisternae
Subtopic:  Skeletal Muscle: Basic Anatomy |
 52%
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Arrange the following events in correct chronological order:

a: acetylcholine hydrolyses into acetate and choline
b: acetylcholine diffuses across the synaptic cleft
c: Impulse reaches the terminal endings of the motor neuron
d: acetylcholine binds to its receptor on motor end plate
e: sarcolemma gets depolarized
 
1. b, c, d, a, e 2. c, b, d, e, a
3. c, d, b, a, e 4. d, e, b, a, c
Subtopic:  Sliding Filament Theory |
 57%
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Acetylcholinesterase:

1. helps in binding of acetylcholine to its receptors.

2. catalyzes the synthesis of acetylcholine from acetate and choline.

3. stimulates receptors within the postsynaptic membrane.

4. breaks down acetylcholine.

Subtopic:  Sliding Filament Theory |
 50%
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