Archives

Which one of the following hormones is not involved in sugar metabolism?

A) Glucagon B) Insulin C) Aldosterone D) Cortisone Answer: C) Aldosterone Explanation: Aldosterone is a mineralocorticoid released from the... View Article

The amino acid tryptophan is the precursor for the synthesis of

A) cortisol and cortisone B) estrogen and progesterone C) thyroxine and triiodothyronine D) melatonin and serotonin Answer:D) melatonin... View Article

Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?

A) Relaxin - Inhibin B) Aldosterone - Atrial Natriuretic Factor C) Insulin - Glucagon D) Parathormone - Calcitonin Answer:A) Relaxin - Inhibin... View Article

The posterior pituitary gland is not a ‘true’ endocrine gland because

A) it only stores and releases hormones B) it is provided with a duct C) it secretes enzymes D) it is under the regulation of the hypothalamus... View Article

Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilisation

A) Glucagon B) Insulin C) Gastrin D) Secretin Answer: B) Insulin Explanation: Hepatocytes are cells of the liver while adipocytes are... View Article

A temporary endocrine gland in the human body is

A) corpus luteum B) corpus cardiacum C) pineal gland D) corpus allatum Answer:A) corpus luteum Explanation: Corpus luteum is a... View Article

Hypersecretion of growth hormone in adults does not cause further increase in height, because

A) bones lose their sensitivity to growth hormone in adults B) epiphyseal plates close after adolescence C) growth hormone becomes inactive in... View Article

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

A) posterior pituitary gland and stimulates the secretion of oxytocin and FSH B) anterior pituitary gland and stimulates the secretion of LH and... View Article

Lungs are enclosed in

A) perichondrium B) periosteum C) pleural membrane D) pericardium Answer: C) pleural membrane Explanation: Lungs are enclosed in... View Article

How does the transport of O2 and CO2 by blood happen?

A) With the help of platelets and corpuscles B) With the help of WBCs and blood serum C) With the help of RBCs and WBCs D) With the help... View Article

In lungs, the air is separated from the venous blood through

A) squamous epithelium + endothelium of blood vessel B) transitional epithelium + tunica externa of blood vessel C) squamous epithelium + tunica... View Article

The exchange of gases in the alveoli of the lungs takes place by

A) active transport B) passive transport C) simple diffusion D) osmosis Answer: C) simple diffusion Explanation: The exchange of gases... View Article

The respiratory centres, which control inspiration and expiration, are located in

A) medulla oblongata B) diencephalon C) spinal cord D) cerebellum Answer:A) medulla oblongata The respiratory centre is present in the medulla... View Article

Haemoglobin is a type of

A) respiratory pigment B) carbohydrate C) skin pigment D) vitamin Answer:A) respiratory pigment Explanation: Haemoglobin is a globular... View Article

When CO2 concentration in blood increases breathing becomes

A) there is no effect on breathing B) shallower and slow C) faster and deeper D) slow and deep Answer: C) faster and deeper Explanation:... View Article

Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of

A) chloroform B) carbon disulphide C) carbon monoxide D) carbon dioxide Answer:C) carbon monoxide Explanation: Carboxyhaemoglobin is a... View Article

M	T	W	T	F	S	S
			1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30