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

Identify the correct characteristic of a skeletal muscle:
1. spindle-shaped cells
2. involuntary control
3. true syncytium
4. non striated

A muscle fasciculus is surrounded by:

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

The correct statement regarding myofibril would be:

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.

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.

The extensions of the cell membrane that penetrate into the centre of skeletal and cardiac muscle cells are called as:

Arrange the following events in correct chronological order:

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.