Q. No.Select the correct statement with respect to disorders of muscles in humans.
1.
Failure of neuromuscular transmission in myasthenia gravis can prevent normal swallowing
2.
Accumulation of urea and creatine in the joints causes their inflammation
3.
An overdose of vitamin D causes osteoporosis
4.
Rapid contractions of skeletal muscles causes muscle dystrophy
1. Sarcomere does not shorten
2. A band remains the same
3. A, H and I bands shorten
4. Actin filaments shorten
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 structures is correctly matched with their correct description:
| Structure | Description | |
| 1. | Cartilage and cornea |
No blood supply but do require oxygen for respiratory need |
| 2. | Shoulder joint and elbow joint |
Ball and socket type of joint |
| 3. | Premolars and molars |
20 in all and 3- rooted |
| 4. | Tibia and fibula |
Both form parts of knee joint |
Which one of the following is the correct description of a certain part of a normal human skeleton:
| 1. | First vertebra is the axis which articulates with the occipital condyles |
| 2. | The 9th and 10th pairs of ribs are called the floating ribs |
| 3. | Glenoid cavity is a depression to which the thigh bone articulates |
| 4. | Parietal bone and the temporal bone of the skull are joined by fibrous joint |
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 |
The contractile protein of skeletal muscle involving ATPase activity is:
1. tropomyosin
2. myosin
3. α-actinin
4. troponin
Which one of the following items gives its correct total number?
1. Floating ribs in humans - 4
2. Amino acids found in proteins - 16
3. Types of diabetes - 3
4. Cervical vertebrae in humans - 8
In human body, which one of the following is anatomically correct?
| 1. | Floating ribs-2 pairs | 2. | Collar bones-3 pairs |
| 3. | Salivary glands-1 pair | 4. | Cranial nerves-10 pairs |
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