What kind of muscle fibers are richly found in the extensor muscles of the back? What characteristics enable these fibres to serve their purpose?

2

(a)

Why is muscle fibre a syncitium? How are myofilaments arranged in it?

2

(a)

What are floating ribs? How many of them are there in the human body?

2

(a)

Give function of a sternum.

2

(a)

Why do muscles fatigue?

2

(a)

Draw the diagram of a sarcomere of skeletal muscle showing different regions.

2

(a)

Define sliding filament theory of muscle contraction.

2

(a)

Name the type of joint between the following:-
(a) atlas/axis
(b) carpal/metacarpal of thumb
(c) between phalanges
(d) femur/acetabulum
(e) between cranial bones
(f) between pubic bones in the pelvic girdle

2

(a)

What are the special properties of muscles?

2

(a)

Give a brief explanation of muscle contraction.

2

(a)

What is aerobic muscle?

2

(a)

What is anaerobic muscle?

2

(a)

Describe the structure of the human skull.

2

(a)

Give some examples of flagellar movement.

2

(a)

What is arthritis and what are the causes of arthritis?

2

(a)