Human Physiology Questions

The vitamin which helps in clotting of blood is

A temporary endocrine gland in the human body is:

Which metal is present in haemoglobin?

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?

The pivot joint between atlas and axis is a type 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:

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

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

Normal blood pressure of healthy person is

Which of the following ions is involved in blood clotting?

Which organ in the human body produces insulin?

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

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

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?

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

Respiratory failure is a condition in which your blood doesn't have enough _______ or has too much _______.

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

Receptor sites for neurotransmitters are present on:

Trypsin enzyme is helpful in which action?

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

Identify the type of cell that is long and branched.

Myelin sheath is produced by:

The transparent lens in the human eye is held in its place by:

Which of the following is an occupational respiratory disorder?

Match the items given in Column I with those in Column II:Column I: (a) Glycosuria, (b) Gout, (c) Renal calculi, (d) Glomerular nephritisColumn II: (i) Accumulation of uric acid in joints, (ii) Mass of crystallised salts within the kidney, (iii) Inflammation in glomeruli, (iv) Presence of glucose in urine

The level of calcium in the blood is maintained by which hormone?

Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?

Match the items given in Column I with those in Column II:Column I: (a) Tricuspid valve, (b) Bicuspid valve, (c) Semilunar valveColumn II: (i) Between left atrium and left ventricle, (ii) Between right ventricle and pulmonary artery, (iii) Between right atrium and right ventricle

The pale yellow colour of urine is due to the presence of which pigment?

Which element is called protein of blood?

Match the items given in Column I with those in Column II:Column I: (a) Tidal volume, (b) Inspiratory Reserve volume, (c) Expiratory Reserve volume, (d) Residual volumeColumn II: (i) $2500$ – $3000\text{mL}$, (ii) $1100$ – $1200\text{mL}$, (iii) $500$ – $550\text{mL}$, (iv) $1000$ – $1100\text{mL}$

The component of blood that prevents its clotting in intact blood vessels is

Islets of Langerhans are present in

Islets of Langerhans are present in the

The component of blood that prevents its clotting inside intact blood vessels is

A drop of each of the following is placed separately on four slides. Which of them will not coagulate?

Which one of the following is an example of negative feedback loop in humans?

Which one of the following mammalian cells is not capable of metabolising glucose to carbon-dioxide aerobically?

Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoryed building starts climbing down the stairs rapidly. Which hormone initiated this act?

During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

A person who is on a long hunger strike and is surviving only on water, will have:

A person is having problems with calcium and phosphorus metabolism in his body. Which one of the following glands may not be functioning properly?

The most abundant intracellular cation is:

What will happen if the stretch receptors of the urinary bladder wall are totally removed?

In a standard ECG, the end of the T-wave marks the end of:

The initial step in the digestion of milk in humans is carried out by:

The most popularly known blood grouping is the $\text{ABO}$ grouping. It is named $\text{ABO}$ and not $\text{ABC}$, because "O" refers to having:

Fructose is absorbed into the blood through mucosa cells of the intestine by the process called:

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs:

Which one of the following statements is true regarding digestion and absorption of food in humans?

A person with blood group AB is considered a universal recipient because he has:

How do parasympathetic neural signals affect the working of the heart?

Which one of the following statements pertaining to pollutants is correct?

Which type of white blood cells release histamine and heparin?

Which part of the human brain is concerned with the regulation of body temperature?

Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?

Select the correct matching of the type of joint with the example in the human skeletal system:

A health disorder that results from the deficiency of thyroxine in adults and is characterised by (i) low metabolic rate, (ii) increase in body weight and (iii) tendency to retain water in tissues is:

Stimulation of a muscle fiber by a motor neuron occurs at:

Injury localized to the hypothalamus would most likely disrupt:

Which matching of site of action, substrate, enzyme and end product is correct?

In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?

Which one of the following statements is not correct?

Identify the hormone with its correct matching of source and function:

Listed below are four respiratory capacities ($\text{a-d}$) and four jumbled respiratory volumes. Which one is correctly matched?Respiratory capacities: (a) Residual volume, (b) Vital capacity, (c) Inspiratory reserve volume, (d) Inspiratory capacity.Respiratory volumes: $1200\text{mL},2500\text{mL},3500\text{mL},4500\text{mL}$.

Fight-or-flight reactions cause activation of:

The shared terminal duct of the reproductive and urinary system in the human male is:

An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as:

Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?

Vital capacity of our lungs is:

What is true about $\text{RBCs}$ in humans?

The main function of the mammalian corpus luteum is to produce:

Select the correct option describing gonadotropin activity in a normal pregnant female:

If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?

The primary dentition in human differs from permanent dentition in not having one of the following type of teeth:

The enzymes that is not present in succus entericus is:

Which is the correct difference between Rod Cells and Cone Cells?

Which one of the following statements in regard to the excretion by the human kidneys is correct?

Which of the following is not a function of the skeletal system?

Human urine is usually acidic because:

Low ${\text{Ca}}^{++}$ in the body fluid may be the cause of:

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

Which one of the following hormones though synthesized elsewhere, is stored and released by the master gland?

Which one of the following items gives its correct total number?

If for some reason our goblet cells are non-functional, this will adversely affect:

Which of the following joints would allow no movement?

Doctors use stethoscope to hear the sound produced during each cardiac cycle. The second sound is heard when:

The nerve centres which control the body temperature and the urge for eating are contained in:

Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls:

Which hormones do stimulate the production of pancreatic juice and bicarbonate?

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

Bulk of carbon dioxide $({\text{CO}}_2)$ released from body tissues into the blood is present as:

The partial pressure of oxygen in the alveoli of the lungs is:

Choose the correct statement.

Given below is the $\text{ECG}$ of a normal human. Which one of its components is correctly interpreted below?

Graves' disease is caused due to:

Which one of the following four secretions is correctly matched with its source, target and nature of action?

Formation of non-functional methaemoglobin causes blue-baby syndrome. This is due to:

Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction.

During the propagation of a nerve impulse, the action potential results from the movement of: