All Free Psychology MCQs with Answers

• A. messages
• B. reflexes
• C. both a and b
• D. none of these

Explanation: Neurons are specialized cells that receive and transmit messages through electrical impulses and chemical signals.

• A. axon
• B. autonomic
• C. linear circuit
• D. none of these

Explanation: The autonomic nervous system regulates involuntary functions such as breathing, digestion and heart activity.

• A. dendrite
• B. axon
• C. cell body
• D. synapses

Explanation: The axon is usually the neuron's longest projection, carrying impulses away from the cell body toward other neurons or effectors.

• A. limbic system
• B. skeletal nervous system
• C. central nervous system
• D. autonomic nervous system

Explanation: The autonomic nervous system carries involuntary motor messages to organs such as the heart, regulating heartbeat without conscious…

• A. release neurotransmitters
• B. receive incoming signals
• C. coordinate the activation of parasympathetic and sympathetic nervous system
• D. control pain

Explanation: Dendrites are branching extensions that receive incoming signals from sensory receptors or other neurons and carry them toward the cell…

• A. neurons
• B. nerves
• C. ganglia
• D. glia

Explanation: Neurons are the basic functional cells of the nervous system because they receive, process, and transmit nerve signals.

• A. peripheral
• B. autonomic
• C. central
• D. sympathetic

Explanation: The skeletal, more accurately called somatic, nervous system is a division of the peripheral nervous system and controls skeletal muscles.

• A. dendrite
• B. myelin sheath
• C. ganglion
• D. axon terminal

Explanation: The myelin sheath is a fatty insulating covering around some axons that speeds the transmission of nerve impulses.

• A. glucose absorption
• B. emotions
• C. metabolism
• D. sexuality

Explanation: Thyroid hormones regulate the body's metabolic rate, influencing how quickly cells use energy.

• A. polarization
• B. depolarization
• C. axonal transmission
• D. synaptic transmission

Explanation: Synaptic transmission is the process by which a neuron communicates with another neuron across the synaptic gap, usually by releasing…

• A. influencing the activity of the autonomic nervous system
• B. controlling the release of certain hormones
• C. influencing drivers such as hunger and thirst
• D. all of these

Explanation: The hypothalamus helps maintain homeostasis by influencing the autonomic nervous system, controlling several hormonal releases, and…

• A. interneurons
• B. sensory neurons
• C. motor neurons
• D. afferent neurons

Explanation: Motor neurons carry commands away from the central nervous system to muscles and glands.

• A. neurons
• B. neurotransmitters
• C. dendrites
• D. synapses

Explanation: Neurons are the specialized cells that receive, process and transmit information in the nervous system.

• A. nerves
• B. ganglia
• C. tracts
• D. dendrites

Explanation: Nerves are bundles of axons that extend from the brain and spinal cord through the peripheral nervous system.

• A. medulla oblongata
• B. hippocampus
• C. hypothalamus
• D. thalamus

Explanation: The hypothalamus regulates biological drives such as hunger, eating and satiety, along with temperature and endocrine functions.

• A. axon terminals
• B. dendrites
• C. glia
• D. action potentials

Explanation: Axon terminals release neurotransmitters into the synapse, allowing a neuron to communicate with a receiving cell.

• A. neurotransmitters
• B. plasmas
• C. syntactic structures
• D. adrenocorticoids

Explanation: Neurotransmitters are chemicals released by neurons that cross synapses and influence receiving cells.

• A. interneurons
• B. motor neurons
• C. sensory neurons
• D. neurotransmittersTry Nootropic Supplements

Explanation: Interneurons make up the vast majority of neurons and link sensory and motor neurons within the central nervous system.

• A. nerves
• B. synapses
• C. neurotransmitters
• D. action potential

Explanation: Neurotransmitters are chemical messengers released by neurons to communicate across synapses, much as hormones carry signals through the…

• A. the cerebellum
• B. the gonads
• C. the thyroid gland
• D. the adrenal medulla

Explanation: Excess secretion of thyroid hormones increases metabolic activity and can produce nervousness, restlessness, and hyperactivity.