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. Cretinism
- B. Hypothyroidism
- C. Thyrotoximia
- D. Myxoedema
Explanation: Myxedema refers to the advanced or severe form of hypothyroidism characterized by swelling of the skin, subcutaneous tissues, and other…
Correct answer: Myxoedema- A. Glucagon
- B. Insulin
- C. Gastrin
- D. Rennin
Explanation: Alpha cells of the pancreas release the hormone glucagon. Glucagon plays a key role in regulating blood glucose levels.
Correct answer: Glucagon- A. Cushing's Disease
- B. Diabetes Mellitus
- C. Hypoglycemia
- D. Addison's Disease
Explanation: Cushing's Disease is caused by excess production/release of the cortisol hormone in the adrenal glands.
Correct answer: Cushing's Disease864. Ejection of milk from mammary glands is under the control of which one of the following hormones?
- A. Androgen
- B. Oxytocin
- C. Progesterone
- D. Estrogen
Explanation: Oxytocin causes an increase in intramammary pressure through the induction of contraction of myoepithelial cells and thus aids in…
Correct answer: Oxytocin- A. Dendron
- B. Dendrites
- C. Axon
- D. Peripheral Branch
Explanation: Simply, nerve impulses travel through the dendron towards the cell body and are carried away from the cell body by the axon.
Correct answer: Axon- A. 31 pairs
- B. 12 pairs
- C. 24 pairs
- D. 62 pairs
Explanation: Humans have 12 pairs of cranial nerves, which connect the brain to different parts of the body.
Correct answer: 12 pairs- A. Cerebrum
- B. Cerebellum
- C. Medulla
- D. Hypothalamus
Explanation: The medulla is responsible for, among other things, the control of involuntary activities, such as heartbeat, respiration, etc.
Correct answer: Medulla- A. Endocrine gland
- B. Exocrine gland
- C. Salivary glands
- D. Bile glands
Explanation: The endocrine system is made up of ductless glands, which help control several aspects of the body.
Correct answer: Endocrine gland- A. Insulin
- B. Glucagon
- C. Antidiuretic hormone
- D. Gastrin
Explanation: Insulin is released by Beta-cells in the islets of Langerhans in the pancreas and helps maintain the blood sugar level in the body.
Correct answer: Insulin- A. Placenta
- B. Ovary
- C. Anterior pituitary
- D. Posterior pituitary
Explanation: Vasopressin (also known as ADH) and Oxytocin are the only two hormones released from the posterior lobe of the pituitary gland.
Correct answer: Posterior pituitary- A. Negative feedback
- B. Positive feedback
- C. Inter-coordination
- D. Feedback mechanism
Explanation: The feedback mechanism involves a response to a stimulus by means of an effector, which impacts conditions to bring them back to the…
Correct answer: Feedback mechanism- A. Dopamine
- B. Acetylcholine
- C. ADH hormone
- D. Oxytocin
Explanation: Parkinson's disease is a neurodegenerative disorder that affects movement.
Correct answer: Dopamine- A. Disturbance of Vision
- B. Constipation
- C. Decrease in Blood Pressure
- D. Increase in Heart Rate
Explanation: The sympathetic nervous system responds to dangerous/stressful situations by pumping blood at a faster rate to the muscles.
Correct answer: Increase in Heart Rate874. Which structures respond when they are stimulated by an impulse coming through the motor neuron?
- A. Receptors
- B. Responses
- C. Effectors
- D. Transduction
Explanation: After a stimulus is received, the central nervous system responds by sending a response via a motor neuron, which transports the signal to…
Correct answer: Effectors- A. Epilepsy
- B. Parkinson's Disease
- C. Alzheimer's Disease
- D. Cerebellar Tumours
Explanation: Parkinson's Disease is characterized by shaking, stiffness, and lack of balance and coordination, all of which fulfill the requirements of…
Correct answer: Parkinson's Disease- A. Glycogen to Glucose
- B. Glucose to Glycogen
- C. Glucose to Lipids
- D. Glucose to Proteins
Explanation: Glucagon is a hormone released by the pancreas, which helps maintain blood sugar levels.
Correct answer: Glycogen to Glucose- A. Adrenal Cortex
- B. Pituitary Adrenal Axis
- C. Adrenal Medulla
- D. Hypothalamus
Explanation: Addison's Disease emerges as a result of destruction of the adrenal cortex, which leads to metabolic disturbances such as weakened muscle…
Correct answer: Adrenal Cortex- A. Vasopressin and ADH
- B. Epinephrine and Norepinephrine
- C. Estrogen and Testosterone
- D. Insulin and Glucagon
Explanation: Epinephrine and norepinephrine are both amino acid-derived hormones and thus are relatively small, as compared to peptide hormones, which…
Correct answer: Epinephrine and Norepinephrine- A. Anterior pituitary lobe
- B. Posterior pituitary lobe
- C. Hypothalamus
- D. Thalamus
Explanation: Antidiuretic hormone (ADH) is produced in the area of the brain called the hypothalamus.
Correct answer: Posterior pituitary lobe- A. Medulla
- B. Corpus callosum
- C. Pons
- D. Hippocampus
Explanation: The two hemispheres in the brain are connected by a thick bundle of nerve fibres called the corpus callosum, which ensures both sides of…
Correct answer: Corpus callosum