Human Physiology Questions

GnRH, a hypothalamic hormone, needed in reproduction, acts on:

Myelin sheath is produced by:

Hypersecretion of Growth Hormone in adults does not cause further increase in height, because:

Receptor sites for neurotransmitters are present on:

MALT constitutes about ___________ percent of the lymphoid tissue in human body.

Which of the following options best represents the enzyme composition of pancreatic juice?

A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?

A decrease in blood pressure/volume will not cause the release of:

Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements:(a) Vitamin A derivatives are formed from carotene(b) The photopigments are embedded in the membrane discs of the inner segment(c) Retinal is a derivative of vitamin A(d) Retinal is a light absorbing part of all the visual photopigments

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

Lungs are made up of air-filled sacs the alveoli. They do not collapse even after forceful expiration, because of:

Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation:

The pivot joint between atlas and axis is a type of:

Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections?

A temporary endocrine gland in the human body is:

The hepatic portal vein drains blood to liver from:

Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?(a) They do not need to reproduce(b) They are somatic cells(c) They do not metabolize(d) All their internal space is available for oxygen transport