BAPSY Biological Basis of Behavior 4

Question 1

Split-brain research by Sperry and Gazzaniga demonstrated that in most people, language functions are primarily located in the:

Accepted Answer

Left hemisphere

Answer

Split-brain studies confirmed that language production and comprehension are largely lateralized to the left hemisphere in most right-handed individuals.

Question 2

The neurotransmitter GABA functions primarily as:

Accepted Answer

The main inhibitory neurotransmitter in the CNS

Answer

GABA (gamma-aminobutyric acid) is the primary inhibitory neurotransmitter in the CNS, reducing neuronal excitability throughout the brain.

Question 3

Which term describes the brain's ability to reorganize neural pathways in response to experience or injury?

Accepted Answer

Neuroplasticity

Answer

Neuroplasticity refers to the brain's capacity to form new synaptic connections and reorganize existing ones in response to learning, experience, or injury.

Question 4

Which gland is often called the 'master gland' of the endocrine system?

Accepted Answer

Pituitary gland

Answer

The pituitary gland is called the master gland because it secretes hormones that regulate the activity of most other endocrine glands.

Question 5

Action potentials are described as 'all-or-nothing' because:

Accepted Answer

A neuron either fires at full magnitude or does not fire at all

Answer

Once the threshold is reached, an action potential fires at a consistent, full amplitude regardless of the stimulus strength—it cannot fire at 'half strength.'

BAPSY - Bachelor of Arts in Psychology Practice Test

BAPSY - Bachelor of Arts in Psychology Practice Test

BAPSY Biological Basis of Behavior 4