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. Axons
- B. Dendrites
- C. Microglia
- D. Oligodendroglia
Explanation: Oligodendroglia are specialized glial cells in the central nervous system responsible for myelin formation.
Correct answer: Oligodendroglia- A. Astroglia
- B. Soma
- C. Dendrite
- D. End bulb
Explanation: Astroglia, also known as astrocytes, are a type of glial cell found in the central nervous system (CNS).
Correct answer: Astroglia- A. Spinal cord
- B. A ganglion
- C. Non-nervous auxiliary system
- D. Somatic division of the peripheral nervous system
Explanation: The somatic division of the peripheral nervous system (PNS) controls voluntary movements and sensory perception.
Correct answer: A ganglion- A. Periphenal Nervous System
- B. Every sense organ
- C. The non-nervous cellular around all axons
- D. None of the above
Explanation: Ganglia are part of the peripheral nervous system (PNS). They are clusters of neuronal cell bodies located outside the central nervous…
Correct answer: Periphenal Nervous System- A. Unipolar
- B. Bipolar
- C. Multipolar
- D. None of these
Explanation: Therefore, the correct term for a neuron with one dendrite and 25 axons is not provided among the options.
Correct answer: None of these- A. Inhibition
- B. Receptors
- C. Glands
- D. Muscles
Explanation: Sensory functions are closely associated with receptors. Receptors are specialized structures, such as those for touch, temperature, pain…
Correct answer: Receptors607. Astroglial cells:
- A. Form cerebrospinal fluid
- B. Form the myelin of CNS neurons
- C. Are phagocytic
- D. Form a part of the blood-brain barrier
Explanation: Astrocytes do not form the myelin sheath around axons in the central nervous system (CNS).
Correct answer: Form the myelin of CNS neurons- A. Prolactin
- B. Oxytocin
- C. Calcitonin
- D. Thyroxin
Explanation: Oxytocin is a hormone produced by the hypothalamus and released by the posterior pituitary gland.
Correct answer: Oxytocin- A. Brain
- B. Somatic division
- C. Autonomic division
- D. CNS
Explanation: Cranial nerves originate from the brainstem and extend to various structures in the head, neck, and trunk.
Correct answer: Brain- A. Growth
- B. Irritability
- C. Reproduction
- D. Energy input
Explanation: Irritability, also known as responsiveness or excitability, is the ability of living organisms to detect and respond to changes in their…
Correct answer: Irritability- A. Sensory
- B. Motor
- C. Associative
- D. Auxiliary
Explanation: Interneurons (also known as association neurons) are neurons that are found exclusively in the central nervous system.
Correct answer: Associative- A. Diencephalon
- B. Medulla oblongata
- C. Cerebral cortex
- D. Dorsal root ganglia of thoracic nerves
Explanation: The cerebral cortex is the outer layer of the brain responsible for higher cognitive functions, such as thinking, perception, memory, and…
Correct answer: Cerebral cortex- A. Ganglion
- B. Soma
- C. Node of ranvier
- D. Axon ending
Explanation: Nodes of Ranvier are gaps or interruptions in the myelin sheath that surrounds axons.
Correct answer: Node of ranvier- A. Motor
- B. Sensory
- C. Astroglial
- D. Association
Explanation: Neurons that perform such interconnections are often referred to as "interneurons" or "association neurons." These neurons are typically…
Correct answer: Association- A. Tri-idothyronine
- B. Insulin
- C. Estrogen
- D. Calcitonin
Explanation: Calcitonin is a hormone produced by the thyroid gland that helps regulate calcium levels in the blood by inhibiting bone breakdown and…
Correct answer: Calcitonin- A. Anterior lobe
- B. Hypothalamus
- C. Posterior lobe
- D. Frontal cortex
Explanation: The hypothalamus is a region of the brain located below the thalamus and above the brainstem.
Correct answer: Hypothalamus- A. Calcitonin and PTH
- B. Adrenalin and glucagon
- C. Glucagon and insulin
- D. ADH and aldosterone
Explanation: Glucagon and insulin are a pair of hormones with antagonistic effects on blood sugar levels.
Correct answer: Glucagon and insulin- A. Insulin and glucagon
- B. Adrenaline and nor-adrenaline
- C. T3 and T4
- D. STH and ACTH
Explanation: The main hormones secreted by the endocrine gland in the pancreas are insulin and glucagon, which regulate the level of glucose in the…
Correct answer: Insulin and glucagon- A. FSH or LH
- B. STHRH or STH
- C. TSH or ACTH
- D. TRH or TSH
Explanation: The release of thyrotrophin in releasing factors from the hypothalamus is controlled by the levels of thyroxine in the blood.
Correct answer: TSH or ACTH- A. Melatonin
- B. Glucagon
- C. Insulin
- D. Calcitonin
Explanation: The islets contain large number of p cells associated with insulin production. The smaller number of a cells secrete glucagon.
Correct answer: Insulin