AFF Exam 2

Front

What is the diencephalon?

Back

The diencephalon is a region of the brain located between the cerebrum and the brainstem, consisting of structures such as the thalamus, hypothalamus, and epithalamus.

Front

Which structure is NOT part of the diencephalon?

Back

Cerebellum.

Front

What is negative feedback in homeostasis?

Back

Negative feedback is a process that returns a condition toward the set point after deviation, helping to maintain stability in biological systems.

Front

What is the main function of the myelin sheath?

Back

The myelin sheath insulates axons and speeds up nerve impulse transmission.

Front

What is a characteristic shared by all chordates?

Back

All chordates share a dorsal hollow nerve cord, notochord, and post-anal tail, but not all have a vertebral column.

Front

What is the critical innovation in amniote evolution?

Back

Eggs with shells.

Front

Define homeostasis.

Back

Homeostasis is the process by which living organisms regulate their internal environment to maintain stable, constant conditions.

Front

What role does the hypothalamus play in the body?

Back

The hypothalamus regulates various bodily functions, including temperature, hunger, thirst, and circadian rhythms.

Front

What is the function of the thalamus?

Back

The thalamus acts as a relay station for sensory information, directing it to the appropriate areas of the brain for processing.

Front

What is the significance of the notochord in chordates?

Back

The notochord provides structural support and is a key feature during the embryonic development of chordates.