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.
Last updated
1,687 questions · page 37 of 85
- A. Nerve cell
- B. Reflex arc
- C. Receptor cells
- D. Mixed nerve
Explanation: The diagram shows a reflex arc, which consists of a receptor, an afferent neuron, an efferent neuron, and the effector.
Correct answer: Reflex arc- A. Stretch reflex
- B. Spinal reflex
- C. Golgi tendon reflex
- D. Crossed Extensor Reflex
Explanation: The spinal reflex includes the stretch reflex, the Golgi tendon reflex, the crossed extensor reflex, and the withdrawal reflex.
Correct answer: Spinal reflex- A. Sensory neurons
- B. Motor neurons
- C. Interneurons
- D. Rotator neurons
Explanation: The body has sensory neurons, which deliver information to the CNS, motor neurons that distribute commands to peripheral effectors, and…
Correct answer: Interneurons- A. One sensory neuron only
- B. One motor neuron only
- C. Two neurons, One sensory neuron, and one motor neuron
- D. None of these
Explanation: The correct option is C. When a reflex arc consists of only two neurons, one sensory neuron and one motor neuron, it is defined as…
Correct answer: Two neurons, One sensory neuron, and one motor neuron- A. Potassium ion gradient
- B. Sodium ion gradient
- C. Bicarbonate ion gradient
- D. None of these
Explanation: The resting potential membrane is determined by the potassium ion gradient.
Correct answer: Potassium ion gradient- A. Autonomic response
- B. Flight response
- C. Somatic response
- D. Reflex response
Explanation: The sympathetic nervous system controls the "fight-or-flight" response.
Correct answer: Flight response- A. Myelinated dendrite
- B. Non-myelinated dendrite
- C. Non-myelinated axon
- D. Myelinated axon
Explanation: The correct option is D. The composition of the white matter of the spinal cord is myelinated axons.
Correct answer: Myelinated axon- A. Alveolar lungs
- B. Seven cervical vertebrae
- C. Thecodont dentition
- D. Ten pairs of cranial nerves
Explanation: The correct option is D. In higher vertebrates (reptiles, birds, mammals), there are 12 pairs of cranial nerves.
Correct answer: Ten pairs of cranial nerves- A. Somatic nervous system
- B. Parasympathetic nervous system
- C. Sympathetic nervous system
- D. Peripheral nervous system
Explanation: The somatic nervous system (SNS) and the autonomic nervous system (ANS) are both parts of the peripheral nervous system.
Correct answer: Somatic nervous system- A. Brain
- B. Spinal cord
- C. Brain stem
- D. Spinal nerves
Explanation: The central nervous system (CNS) includes the brain and spinal cord, while the peripheral nervous system includes all of the nerves that…
Correct answer: Spinal nerves- A. Medulla, pons and cerebellum
- B. Medulla, cerebellum and hypothalamus
- C. Cerebellum, medulla and brainstem
- D. All of the above
Explanation: Hindbrain, also called rhombencephalon, is a region of the developing vertebrate brain that is composed of the medulla oblongata, the…
Correct answer: Medulla, pons and cerebellum- A. Myelin sheath
- B. Dendrites of the next neuron
- C. Synaptic cleft
- D. Postsynaptic membrane
Explanation: The axonal terminals are specialized to release the neurotransmitters of the presynaptic cell.
Correct answer: Synaptic cleft- A. Nephrons
- B. Myoid cells
- C. Neurons
- D. None of these
Explanation: Neuroglia is a collective of cells whose primary function is to protect and maintain the optimum functioning of your nervous system.
Correct answer: Neurons- A. Hepatic arteries
- B. Carotid arteries
- C. Renal arteries
- D. Pulmonary arteries
Explanation: Stretch receptors are found around the carotid artery, where they monitor blood pressure and stimulate the release of antidiuretic hormone…
Correct answer: Carotid arteries- A. Lower Limbs
- B. Abdomen
- C. Upper Limbs
- D. Heart
Explanation: The brachial nerve plexus is a network of nerves near the pectoral girdle that supplies your upper limb.
Correct answer: Upper Limbs- A. None of these
- B. Both of these
- C. Learning
- D. Instinctive
Explanation: Instinctive behaviors are inherent and come from birth, while learning behaviors can be learned and modified by interaction with society.
Correct answer: Learning- A. Dendrites
- B. Myelin sheath
- C. Axon
- D. Nodes of Ranvier
Explanation: Information is carried towards the neuron cell body by processes called dendrites. Impulses are carried away from the neuron via the axon.
Correct answer: Dendrites- A. Sensory neuron
- B. Intermediate neuron
- C. Motor neuron
- D. Ganglia
Explanation: Sensory neurons are the nerve cells that are activated by sensory input from the environment - for example, when you touch a hot surface…
Correct answer: Sensory neuron- A. Myelin sheath gaps
- B. Neurofibril node
- C. All of these
- D. None
Explanation: Nodes of Ranvier are also known as: Myelin Sheath Gaps: Nodes of Ranvier refer to the gaps or interruptions in the myelin sheath that…
Correct answer: All of these- A. 5
- B. 7
- C. 4
- D. 6
Explanation: Most reflex arcs have five main components: receptors, sensory neurons, interneurons, motor neurons, and muscles.
Correct answer: 5