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PSY 208 Biopsychology (Sem Aug, 2025) S2

PSY 208 Biopsychology (Sem Aug, 2025) S2

Looking for PSY 208 Biopsychology (Sem Aug, 2025) S2 test answers and solutions? Browse our comprehensive collection of verified answers for PSY 208 Biopsychology (Sem Aug, 2025) S2 at hlms.help.edu.my.

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What is an ablation, insult, and lesion?

a. Ablation = removal of brain tissue; Insult = injury to the brain (e.g., stroke, trauma); Lesion = area of damaged tissue

c. Ablation = normal brain development; Insult = emotional stress; Lesion = protective covering of the brain

d. Ablation = muscle contraction; Insult = spinal cord reflex; Lesion = type of hormone regulation

b. Ablation = neurotransmitter release; Insult = reflex response; Lesion = synaptic pruning

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Damage to this area impairs memory formation, what is it?

These parts of the brain form a bridge between the left and right hemispheres.

c. Corpus callosum

d. Cerebellar peduncles

b. Limbic system

a. Medulla

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Which part of the brain controls vital reflexes such as heartbeat and breathing?

Why is grey matter "grey" and white matter "white"?

d. Grey matter is made of blood vessels, while white matter is made of fat

c. Grey matter contains neuron cell bodies and dendrites, while white matter is rich in myelinated axons

b. Grey matter is more active, while white matter is inactive

a. Grey matter contains many myelinated axons, while white matter has cell bodies

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Which of these processes are an ionotropic response?

d. Regulation of gene expression in the nucleus

c. Activation of second messenger pathways inside the cell

b. Direct opening of ligand-gated ion channels

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a. Slow modulatory effects through G-protein signaling

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What structure and process leads to faster impulse transmission along the axon?

d. Myelin sheath enabling saltatory conduction

a. Dendrites branching into multiple synapses

c. Continuous conduction along unmyelinated fibers

b. Axon terminals releasing neurotransmitters

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How do neurons ensure that the neural impulse does not back-propagate?

c. Sodium channels remain open indefinitely

b. Potassium leak channels push the impulse forward

a. Absolute refractory period prevents reactivation of sodium channels

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d. Neurotransmitters block retrograde signaling

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How is communication at the synapse regulated so that there is no overproduction of neurotransmitters?

b. Continuous release of neurotransmitters ensures balance

c. Voltage-gated sodium channels close after neurotransmitter release

d. Sodium-potassium pump actively removes neurotransmitters

a. Enzymatic breakdown and reuptake mechanisms recycle neurotransmitters

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