Multiple Choice QuestionsWhich one of the following pairs of chemical substances, is correctly categorised?
Calcitonin and thymosin - Thyroid hormones
Pepsin and prolactin - Two digestive enzymes secreted in stomach
Troponin and myosin - Complex proteins in striated muscles
Troponin and myosin - Complex proteins in striated muscles
Erythropoiesis starts in
kidney
liver
spleen
spleen
C.
spleen
The process of formation of erythrocytes is erythropoiesis, which is part of haemopoiesis (formation of blood).
The production of blood during different stages is as follows:
During few early weeks of embryonic life-yolk sac.
Some later stages (After 3-4 months) - liver (mainly) along with spleen and lymph nodes.
Later part of gestation and after birth (After 7 months) - red bone marrow (till 5 yrs)
Bone marrow of long bones (20-25 yrs).
Membranous bones like vertebrae, etc.
A chemical signal that has both endocrine and neural roles is?
melatonin
calcitionin
epinephrine
epinephrine
Match the source gland with its respective hormone as well as the function.
| Source gland | Hormone | Function |
| Posterior pituitary | Vasopressin | Stimulates resorption of water in the distal tubules in the nephron |
| Source gland | Hormone | Function |
| Corpus luteum | Oestrogen | Supports pregnancy |
| Source gland | Hormone | Function |
| Thyroid | Thyroxine | Regulates blood calcium level |
| Source gland | Hormone | Function |
| Thyroid | Thyroxine | Regulates blood calcium level |
The 24 hour (diurnal) rhythm of our body such as the sleep -wake cycle is regulated by the hormone
Calcitonin
prolactin
adrenaline
adrenaline
Injury to the adrenal cortex is not likely to affect the secretion of which one of the following?
Aldosterone
Both androstenedione and dehydroepiandrosterone
Adrenalin
Adrenalin
Which one of the following pairs is incorrectly matched?
Glucagon - Beta cells (source)
Somatostatin - Delta cells (source)
Corpus luteum - Relaxin (secretion)
Corpus luteum - Relaxin (secretion)
The nerve centres which control the body temperature and the urge for eating are contained in
hypothalamus
pons
cerebellum
cerebellum
Toxic agents present in food which interfere with thyroxine synthesis lead to the development of
toxic goitre
cretinism
simple goitre
simple goitre
Select the correct matching of a hormone its source and function.
|
Hormone |
Source |
Function |
|
Vasopressin |
Posterior Pituitary |
Increases loss of water through urine |
|
Hormone |
Source |
Function |
|
Norepinephrine |
Adrenal medulla |
Increases heartbeat, rate of respiration and alertness |
|
Hormone |
Source |
Function |
|
Glucagon |
Beta-cells of Islets of Langerhans |
Stimulates glycogenolysis |
|
Hormone |
Source |
Function |
|
Glucagon |
Beta-cells of Islets of Langerhans |
Stimulates glycogenolysis |
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