Free Coordination and Control MCQs with Answers
1,687 Coordination and Control MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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- A. Meissner's corpuscles
- B. Nissl's granules
- C. Pacinian corpuscles
- D. Dorsal root ganglion
Explanation: The groups of ribosomes associated with RER in a neuron are called Nissl's granules.
Correct answer: Nissl's granules- A. Motor unit
- B. Axon
- C. Dendron
- D. Dendron and axon
Explanation: The part of the motor neuron that makes a synapse with the sarcolemma is called the motor end plate.
Correct answer: Axon- A. 5
- B. 4
- C. 3
- D. 2
Explanation: This option is correct. The skin is responsible for detecting five primary sensations, which are touch, pressure, pain, temperature, and…
Correct answer: 5- A. -50mV
- B. -90mV
- C. +50mV
- D. -70mV
Explanation: Of the options given, -90mV is the only one that is hyperpolarized. The other options are all either depolarized (-50mV) or at resting…
Correct answer: -90mV- A. Myelin sheath
- B. Axon
- C. Dendron
- D. Dendrites
Explanation: The spiny look of neurons is due to their dendrite. Dendrite is the branched part of a neuron that receives nerve impulses from other…
Correct answer: Dendrites- A. Glands
- B. Thermo-receptors
- C. Sensory neurons
- D. Pacinian corpuscles
Explanation: Glandular cells respond to impulses from the autonomic nervous system
Correct answer: Glands- A. Cnidarians
- B. Platyhelminthes
- C. Chordates
- D. Mammals
Explanation: The central nervous system (CNS) was first developed in chordates. Cnidarians, platyhelminthes, and mammals do not have a CNS.
Correct answer: Chordates- A. Reticular formation
- B. Amygdala
- C. Hippocampus
- D. Thalamus
Explanation: The reticular formation is not a part of the forebrain. It is a part of the brainstem, which is the lower part of the brain.
Correct answer: Reticular formation- A. Thalamus
- B. Limbic system
- C. Cranial nerves
- D. Cerebral cortex
Explanation: Our most unconscious behaviors are controlled by the limbic system. The limbic system is a group of structures in the brain that are…
Correct answer: Limbic system- A. Corpus luteum
- B. Corpus striatum
- C. Corpus callosum
- D. Tracts
Explanation: The structure that connects both cerebral hemispheres is called the corpus callosum.
Correct answer: Corpus callosum- A. Increase blood pressure
- B. Decreased heart rate
- C. Increased blood flow to limbs
- D. Dilation of the pupil of the eye
Explanation: Stimulation of the vagus nerve can cause a number of different effects, including Decreased heart rate, The vagus nerve sends signals to…
Correct answer: Decreased heart rate- A. MSH and cortical hormones increases
- B. MSH increases, cortical hormones decreases
- C. MSH and cortical hormones decreases
- D. MSH decreases, cortical hormones increases
Explanation: In Addison's disease, the levels of MSH are often increased. This is because the pituitary gland is trying to compensate for the lack of…
Correct answer: MSH increases, cortical hormones decreases- A. Spinal canal
- B. Brain
- C. Neck
- D. Stomach mucosa
Explanation: The pineal gland is located at the epithalamus, which is a small region of the brain that is located near the center of the brain.
Correct answer: Brain- A. Thicken and vascularize it
- B. Prevent ripening of follicles
- C. Ovulation
- D. Placenta formation
Explanation: progesterone does have an effect on the ovary to prevent ripping of the follicle.A follicle is a small sac in the ovary that contains an…
Correct answer: Prevent ripening of follicles- A. Spermatogenesis
- B. Castration
- C. Deficiency of dopamine
- D. Hypergonadism
Explanation: A male body tends more towards the form of an immature female after castration.
Correct answer: Castration- A. No exposure to sunlight
- B. PTH excess
- C. Vitamin D excess
- D. LTH absence
Explanation: PTH excess can cause hyperparathyroidism, which is a condition in which the parathyroid glands produce too much parathyroid hormone (PTH).
Correct answer: PTH excess- A. Thyroxin
- B. Aldosterone
- C. Epinephrine
- D. Nor-adrenaline
Explanation: Aldosterone is a steroid hormone that is produced by the adrenal cortex, the outer layer of the adrenal glands.
Correct answer: Aldosterone- A. Gray and white matter
- B. Ganglia and gray matter
- C. Nerve and ganglia
- D. Nerve and white matter
Explanation: The cell bodies of neurons are found in the gray matter of the central nervous system (CNS) and the ganglia of the peripheral nervous…
Correct answer: Ganglia and gray matter- A. Arachnoid mater
- B. Pia mater
- C. Dura mater
- D. Sclera
Explanation: The outermost of the three cranial meninges is the dura mater. It is a thick, tough membrane that surrounds the brain and spinal cord.
Correct answer: Dura mater- A. Bipolar
- B. Pseudounipolar
- C. Unipolar
- D. Multipolar
Explanation: The dorsal root ganglion is a cluster of neurons that transmit sensory information from the periphery to the central nervous system.
Correct answer: Pseudounipolar