All Free Psychology MCQs with Answers

• A. dendrites to cell body to synapse
• B. axon to soma to dendrites
• C. dendrites to soma to axon
• D. glia to dendrites to axon

Explanation: Within a neuron, signals are typically received by the dendrites, integrated in the soma or cell body, and transmitted along the axon…

• A. understanding what others are saying
• B. recognizing familiar faces
• C. pronouncing words correctly
• D. controlling voluntary muscles

Explanation: Wernicke’s area supports comprehension of spoken and written language, so damage makes it difficult to understand what others say.

• A. epinephrine
• B. dopamine
• C. norepinephrine
• D. acetylcholine

Explanation: Acetylcholine activates skeletal muscles at the neuromuscular junction, producing voluntary movement and muscle contraction.

• A. pons
• B. positrons
• C. connector neurons
• D. hemispheres

Explanation: The cerebral cortex is divided into two cerebral hemispheres, the left and right, which communicate through the corpus callosum.

• A. collection of sexual characteristics regulated by the X and Y chromosomes
• B. range of traits that contribute to reproductive success
• C. set of genetic material in an organism's chromosomes
• D. set of dominant traits received from either parent

Explanation: The genome is the complete set of genetic material present in an organism, including genes and other DNA in its chromosomes.

• A. arms
• B. legs
• C. trunk
• D. face

Explanation: The motor cortex gives disproportionately large areas to body parts requiring precise control, especially the face, hands, and fingers.

• A. facially express emotions
• B. solve arithmetic problems
• C. understand simple verbal requests
• D. process information in an orderly sequence

Explanation: The right hemisphere contributes strongly to emotional expression and the interpretation of emotional information, so damage may impair…

• A. reticular formation
• B. autonomic nervous system
• C. endocrine system
• D. cerebral cortexGet Study Guides

Explanation: Hormones are chemical messengers released by glands into the bloodstream, which is the defining function of the endocrine system.

• A. hypothalamus
• B. corpus callosum
• C. cerebellum
• D. medullaDiscover Lesson Plans

Explanation: The finger-to-nose task tests coordination and precision, functions controlled by the cerebellum, which alcohol commonly depresses.

• A. axon
• B. cell body
• C. soma
• D. neurilemma

Explanation: The axon is the neuron's long conducting fiber, carrying electrical impulses away from the cell body toward other neurons or muscles.

• A. dendrite
• B. axon
• C. myelin
• D. soma

Explanation: The cell body is called the soma, which contains the nucleus and supports the neuron's metabolic functions.

• A. axons
• B. axles
• C. atoms
• D. axes

Explanation: The standard basic parts of a neuron are dendrites, the soma or cell body, and axons. Axles, atoms, and axes are not neuron structures.

• A. Axon
• B. Myelin
• C. Blastula
• D. Soma

Explanation: A blastula is an early stage of embryonic development, not a neuron structure. Axons, myelin, and the soma are all associated with neurons.

• A. form a protective coating over nerve axons
• B. affect the speed nerve impulses
• C. block the reception of acetylcholine
• D. aid a nerve's receptivity to neurotransmitters by increasing the number of receptor sites available

Explanation: Myelin forms an insulating protective sheath around many axons, allowing nerve impulses to travel more efficiently and rapidly.

• A. synapses, cell bodies
• B. Dendrites, axon buttons
• C. Axon buttons dendrites
• D. Axon; cell bodies

Explanation: Dendrites generally receive signals from other neurons, while axon buttons release neurotransmitters to transmit signals onward.

• A. biogenic amines
• B. acetylcholine
• C. endorphins
• D. serotoninsTry Prep Courses

Explanation: Endorphins are naturally produced opioid-like chemicals that reduce pain and can contribute to pleasurable feelings.

• A. 46 genes
• B. 46 pair of genes
• C. 23 genes
• D. 23 chromosomes

Explanation: A human sperm cell is haploid, so it carries 23 chromosomes, one member of each chromosome pair.

• A. become sexually preoccupied
• B. lapse into a coma
• C. become violently aggressive
• D. cower in fear

Explanation: The reticular formation helps maintain arousal and consciousness by activating higher brain regions.

• A. plasticity
• B. lateralization
• C. tomography
• D. aphasia

Explanation: Aphasia is an impairment of language production or comprehension, usually caused by brain damage.

• A. thyroid gland
• B. Pancreas
• C. adrenal gland
• D. pituitary gland

Explanation: The pituitary gland is called the master gland because it releases hormones that regulate several other endocrine glands.