Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair.
Pairs of skeletal parts |
Category |
|
1. |
Malleus and stapes |
Ear ossicles |
2. |
Sternum and Ribs |
Axial skeleton |
3. |
Clavicle and Glenoid cavity |
Pelvic girdle |
4. |
Humerus and ulna |
Appendicular skeleton |
The type of muscles present in our:
1. | upper arms are smooth muscle fibres fusiform in shape |
2. | heart is involuntary and unstriated smooth muscles |
3. | intestine are striated and involuntary |
4. | thighs are striated and voluntary |
Which one of the following pairs of chemical substances, is correctly categorised?
1. | Pepsin and prolactin - Two digestive enzymes secreted in the stomach |
2. | Troponin and myosin - Complex proteins in striated muscles |
3. | Secretin and rhodopsin - Polypeptide hormones |
4. | Calcitonin and thymosin - Thyroid hormones |
Unit of contraction in a muscle fiber is:
1. Sarcomere
2. Muscle fiber
3. Actin
4. None
The name of the joint between the ribs and sternum is:
1. Cartilaginous joint
2. Angular joint
3. Gliding joint
4. Fibrous joint
Contractile unit of muscle is part of myofibril between
1. Z-line and l-band
2. Z-line and Z-line
3. Z-line and A-band
4. A-band and l-band
Muscle fatigue occurs due to the accumulation of
1.
2. Myosin ATPase
3. Lactic acid
4. Creatine phosphate
Which of the following are involved in the formation of acetabulum?
a. llium
b. ischium
c. Pubis
1. a & b only
2. b & c only
3. a & c only
4. a, b & c
The total number of bones in the limb of a man is
1. 24
2. 30
3. 14
4. 21
Identify the structure marked ‘X’
1. Humerus
2. Radius
3. Scapula
4. Clavicle