Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction:
| 1. | Calcium | 2. | Magnesium |
| 3. | Sodium | 4. | Potassium |
Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body:
| 1. | Erythrocytes | 2. | Leucocytes |
| 3. | Neutrophils | 4. | Thrombocytes |
1. Insulin
2. Glucagon
3. Secretin
4. Gastrin
| 1. | junction leading to fatigue |
| 2. | high concentration of ca++ and Na+ |
| 3. | decreased level of oestrogen |
| 4. | accumulation of uric acid leading to inflammation of joints |
Serum differs from blood plasma in:
| 1. | lacking globulins | 2. | lacking albumins |
| 3. | lacking clotting factors | 4. | lacking antibodies |
Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because?
| 1. | there is a negative pressure in the lungs |
| 2. | there is a negative intrapleural pressure pulling at the lung walls |
| 3. | there is a positive intrapleural pressure |
| 4. | pressure in the lungs is higher than the atmospheric pressure |
The posterior pituitary gland is not a 'true' endocrine gland because:
| 1. | it is provided with a duct |
| 2. | it only stores and releases hormones |
| 3. | it is under the regulation of hypothalamus |
| 4. | it secretes enzymes |
The part of nephron involved in active reabsorption of sodium is:
1. distal convoluted tubule
2. proximal convoluted tubule
3. Bowman's capsule
4. descending limb of Henle's loop
Which of the following is a hormone-releasing IUD?
| 1. | LNG-20 | 2. | Multiload-375 |
| 3. | Lippes loop | 4. | Cu-7 |
Which of the following is incorrect regarding vasectomy?
1. No sperm occurs in seminal fluid
2. No sperm occurs in epididymis
3. Vasa deferentia is cut and tied
4. Irreversible sterility
© 2026 GoodEd Technologies Pvt. Ltd.