Free Coordination and Control MCQs with Answers

• A. Gamma-aminobutyric acid (GABA)
• B. Glutamate
• C. Acetylcholine
• D. Dopamine

Explanation: GABA, or gamma-aminobutyric acid, is the primary inhibitory neurotransmitter in the central nervous system, responsible for reducing…

• A. Pituitary
• B. Adrenal
• C. Thyroid
• D. Parathyroid
• E. Pancreas

Explanation: The adrenal gland located at the top of the kidneys is involved in the release of adrenaline which is an emergency in flight-or-fight…

• A. Option A
• B. Option B
• C. Option C
• D. Option D
• E. Option E

Explanation: The figure is not given in the question. The first label part is the thalamus, the second part is the cerebellum, and the third part is…

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Explanation: Sensory neuron function to carry the sensory information to the CNS. Interneurons transfer impulses from sensory to motor neuron remaining…

• A. Transmission by the nervous system is short-lived, whereas transmission by the hormonal system is long-lasting.
• B. The nervous system uses electrical impulses to send signals through neurons, whereas the hormonal coordination uses chemical messengers transported in the blood.
• C. Responses are often permanent in the hormonal system but temporary and reversible in the nervous system.
• D. In the nervous system secretory chemicals are released in blood while in the hormonal system; secretory chemicals are released in extracellular fluids.

Explanation: D statement is wrong because in the nervous system the secretory chemicals are not released in the blood they are released on another…

• A. Exchanged with sodium ions through co-transport channels at axon surfaces during the reestablishment of a resting potential after an action potential.
• B. Moved in by diffusion through gated ion channels in pre-synaptic membranes of excitatory neurones causing vesicles to move to pre-synaptic membrane as an impulse arrives.
• C. Exchanged with chloride ions at the post-synaptic membrane, in changing membrane potential in inhibitory neurones.
• D. Actively pumped out of axons at nodes of Ranvier of myelinated neurones, being the main cause of the potential difference that is maintained during the resting potential.

Explanation: The arrival of an impulse at the synaptic knob causes gated Ca2+ channels in the presynaptic membrane to open.

• A. Repolarization
• B. Sodium ions forming an ionic bonding
• C. The opening of sodium channels/gates
• D. The action of the acetylcholinesterase enzyme

Explanation: Option A mentions repolarization, which is the stage where there is a large influx of potassium ions out from the cell, during which…

• A. Syphilis is caused by virus
• B. Syphilis affects eyes, bones, joints, CNS
• C. Genital herpes produces genital soreness and ulcers
• D. Gonorrhea is caused by gram positive bacterium

Explanation: The statement Syphilis is caused by a virus is incorrect. Syphilis is caused by a spirochete bacterium called Treponema pallidum.

• A. Hair end organs
• B. Pacinian corpuscles
• C. Meissner's Corpuscles
• D. All of these

Explanation: Meissner's corpuscles (or tactile corpuscles) are a type of mechanoreceptor. They are touch receptors.

• A. Alveolar lungs
• B. Seven cevical vertebrae
• C. Thecodont dentition
• D. Ten pairs of cranial nerves

Explanation: Correct option is D. In higher vertebrates (reptiles, birds, mammals) there are 12 pairs of cranial nerves.

• A. Thermoregulation
• B. Vision
• C. Memory
• D. Tactile sensation-response when pricked with a needle.

Explanation: Correct option is D. Medulla oblongata is the bottom-most part of your brain.

• A. Xanax
• B. Lorazepam
• C. Butabarbital
• D. Diazepam
• E. All of these

Explanation: Hypnotic drugs or sleeping pills are a type of sedative. These drugs have a relaxing effect on the CNS and are used to induce sleep in…

• A. Pons of medulla
• B. Thalamus and limbic system
• C. Pons and medulla
• D. Hypothalamus and limb

Explanation: The diencephalon is a part of the brain that is located between the cerebrum and the midbrain.

• A. Hair end organs
• B. Pacinian corpuscles
• C. Meissner's Corpuscles
• D. All of these options are correct

Explanation: Meissner's corpuscles respond to touch and low-frequency vibration. Ruffini endings detect stretch, deformation within joints, and warmth.

• A. Wallace
• B. Lamark
• C. Iyell
• D. Darwin

Explanation: Darwin used the word instinct in several different ways to refer to what impels a bird to breed; to a disposition, such as courage or…

• A. Voluntary action
• B. Involuntary action
• C. Saltatory conduction
• D. None of these

Explanation: Involuntary actions are actions that are not controlled by our will. Reflex actions are sudden actions in response to something.

• A. White matter
• B. Gray matter
• C. Cell bodies
• D. Non-myelinated nerve fibres

Explanation: A is correct since the outer portion of the spinal cord consists of white matter because of the fatty substance (myelin) that surrounds…

• A. Nephrons
• B. Myoid cells
• C. Neurons
• D. None of these options are correct

Explanation: Neuroglia maintain homeostasis, form myelin, and provide support and protection for neurons in the nervous systems.

• A. Vasopressin and ADH
• B. Epinephrine and Norepinephrine
• C. Oestrogen and Testosterone
• D. Insulin and Glucagon

Explanation: Epinephrine and norepineprin are both amino acid derived hormones, and thus are relatively small, as compared to peptide hormones, which…

• A. Glucagon
• B. Epinephrine
• C. Thyroxin
• D. Estogen

Explanation: Estrogen is a steroid hormone that plays a crucial role in the development and regulation of the female reproductive system.