Free MCQs & Online Quiz Practice for Exams

Q: In a body Shifts in water-solute balance are managed primarily by______

A) Respiratory system

B) Urinary system

C) Endocrine adjustments

D) Circulatory system

Q: Physiologically ________is the most important mechanism for water loss from the body?

A) Excretion in urine

B) Sneezing

C) Sweating

D) Elimination in feces

Q: The process that normally exerts the greatest control over the water balance of an individual is

A) Sweating

B) Kidney function

C) Evaporation through the skin

D) Respiratory loss

Q: Which of the following does NOT dispose off a type of waste directly to the environment?

A) Digestive system

B) Respiratory system

C) Circulatory system

D) Urinary system

Q: The most toxic substances routinely found in the blood are metabolites of what type of molecules?

A) Proteins

B) Carbohydrates

C) Nucleic acids

D) Fats

Q: Which of the following is the last structure that urine passes through during its excretion from body?

A) Distal tubule

B) Urethra

C) Urinary bladder

D) Ureter

Q: The process during which potassium and hydrogen ions and some toxic substances are put into urine is called

A) Tubular secretion

B) Reabsorption

C) Filtration

D) Countercurrent multiplication

Q: Why is there no glucose present in the filtrate in the distal tubule of a nephron?

A) Its molecules are too large to pass across the basement membrane

B) Reabsorption

C) Filtration

D) Secretion

Q: Kidney health is described in terms of

A) The number of kidney stones

B) Rate of filtration

C) Water retention

D) Blood clot

Q: In case of overheating, the body temperature is regulated by

A) More sweating and more urination

B) More sweating and less urination

C) Less sweating and more urination

D) Less sweating and less urination

Q: An animal that warms itself mainly by absorbing heat from its surroundings is known as

A) Homoiotherm

B) Ectotherm

C) Endotherm

D) None of them

Q: Which of the following is common to all neurons?

A) A cell body which contains a nucleus

B) A thick myelin sheath

C) Presence of nodes of Ranvier

D) Presence of Schwann cells

Q: What will occur if a drug at the neuromuscular junction blocks the receptor sites on the post-synaptic membrane?

A) Inhibition of Acetylcholine release

B) Muscle contraction

C) Muscle paralysis

D) Release of calcium ions

Q: The groups of ribosomes present in the cell body of the neuron, which are associated with rough endoplasmic reticulum are called

A) Meissner's corpuscles

B) Pacinian corpuscles

C) Nissl's granules

D) Lysosome granules

Q: The mammalian forebrain is differentiated into the thalamus, limbic system and the

A) Cerebellum

B) Cerebrum

C) Hippocampus

D) Hypothalamus

Q: Information back from the control center to the effectors is done by nerve pathway

A) Afferent

B) Efferent

C) Both

D) None

Q: The number of human spinal nerves is

A) 24

B) 50

C) 62

D) 64

Q: The electrical potential of cell membrane of neuron when it is not transmitting any signal is called

A) Resting membrane potential

B) Action potential

C) Propagation of impulse

D) Synapse

Q: Which one of the following condition is resulted from excess GH in adults?

A) Cushing's disease

B) Acromegaly

C) Hyperthyroidism

D) Diabetes mellitus

Q: Which hormone regulates the kidney's retention of water?

A) Prolactin

B) Oxytocin

C) Thyroxine

D) Vasopressin (ADH)