Free Coordination and Control MCQs with Answers

• A. In the Hypothalamus
• B. In the Adrenal Gland
• C. In the Pancreas
• D. In the Parathyroid

Explanation: Hormonal secretion by the anterior pituitary is controlled by hypothalamic-releasing hormones that reach their target endocrine tissues in…

• A. Follicle development
• B. Development of the uterine lining
• C. Spermatogenesis
• D. Female secondary sex characteristics

Explanation: The main function of progesterone is to prepare the endometrium (lining of your uterus) for a fertilized egg to implant and grow.

• A. Produce hormones that are secreted into the digestive tract
• B. Release hormones into the bloodstream or the fluid around cells
• C. Release hormones as rapidly as nerve impulses are transmitted
• D. None of the above

Explanation: An organ that makes hormones that are released directly into the blood and travel to tissues and organs all over the body.

• A. Diabetes mellitus
• B. Hypothyroidism
• C. Seasonal affective disorder (SAD) syndrome
• D. None of the above

Explanation: Seasonal affective disorder (SAD) is a type of depression that comes and goes in a seasonal pattern.

• A. Sends nerve impulses and also makes hormones
• B. Is both a nervous and olfactory organ
• C. Belongs to both the nervous and circulatory systems
• D. Is found connected to both kidneys

Explanation: Your hypothalamus, a structure deep in your brain, acts as your body's smart control coordinating center.

• A. Oxytocin - hypothalamus
• B. Insulin - pancreas
• C. Glucagon - pancrease
• D. Thyroid hormone - pituitary gland

Explanation: This is mismatched because thyroid hormone is secreted by the thyroid gland.

• A. Decrease the heartrate
• B. Is caused by hormone secretions in the adrenal medulla
• C. Controlled by sympathetic nervous system
• D. Is the result of aldosterone causing faster blood flow

Explanation: This system is important during emergency situations and is associated with "Fight or Flight."

• A. Thyroid hormones
• B. Epinephrine
• C. Metabolon
• D. Prolactin

Explanation: The thyroid gland releases triiodothyronine (T3) and thyroxine (T4). These hormones play an important role in regulation of your weight…

• A. Is called hypothyroidism
• B. Can cause nervousness, irregular heartbeat, and weight loss
• C. Can cause stunted growth and retardation in children
• D. Can cause a goiter

Explanation: Excess thyroxine produces a condition called Graves' disease, with exophthalmic goiter and increase in the basal metabolic rate.

• A. Production of heat shock proteins
• B. Closing of stomata
• C. Production of abscisic acid
• D. Production of fructans

Explanation: When plants are exposed to stress, the synthesis of normal proteins is decreased while the expression of special genes are up-regulated…

• A. Thalamus
• B. Cerebrum
• C. Hypothalamus
• D. Cerebellum

Explanation: The thalamus acts as the major coordinating centre for sensory and motor signals, relaying them to and from the cerebrum.

• A. Nervous system only
• B. Endocrine system only
• C. Both the nervous & endocrine systems
• D. Both endocrine & exocrine

Explanation: During stress or emergency situations, both the nervous system (especially the sympathetic division of the autonomic nervous system) and…

• A. Forebrain
• B. Midbrain
• C. Hindbrain
• D. Spinal cord

Explanation: Option A: Forebrain is the part of the brain that is responsible for higher-level functions, such as thinking, planning, and…

• A. Digestion of food
• B. Heart beat
• C. Contraction of the pupil of the eye
• D. Thought
• E. Breathing rate

Explanation: Thought is a conscious action, so it is not controlled by the autonomic nervous system rather by the somatic nervous system.

• A. I, III, II, and IV
• B. I, IV, II and III
• C. IV, I, III and II
• D. IV, III, I and II
• E. II, I, IV and III

Explanation: The sequence of transmission of nerve impulses is as follows:1. Depolarisation occurs at the presynaptic terminal.2.

• A. Secretion of sweat
• B. Salivation
• C. Flexion due to needle prick
• D. Blinking of eyes due to strong light

Explanation: Reflex actions are quick, automatic responses to some stimuli that are not generated by the brain but by the spinal cord.

• A. Sodium
• B. Potassium
• C. Calcium
• D. Chloride

Explanation: Calcium ions are critical in facilitating the release of neurotransmitters and insulin.

• A. Acetylcholine
• B. Dopamine
• C. Serotonin
• D. Epinephrine

Explanation: When CPR does not generate coronary perfusion of more than 15-20 mmHg, return of spontaneous circulation (ROSC) rarely or never occurs.

• A. Constriction of the pupil
• B. Decreased heart rate
• C. Increased gastric section
• D. Reduction of adrenaline secretion
• E. Increased respiration

Explanation: The sympathetic nervous system mostly comes into play during times when the body feels it needs to respond to threatening stimuli.

• A. Abscisic acid (ABA)
• B. Auxin
• C. Cytokinins
• D. Ethylene
• E. Gibberellins

Explanation: The plant hormone responsible for fruit ripening is ethylene. Ethylene is a gaseous plant hormone that plays a crucial role in the…