Two External Features Unique to the Fetus Are

question 8

Multiple Choice

Two external features unique to the fetus are

• A) vernix caseosa and lanugo hair
• B) translucent skin and sebum
• C) ductus venosus and umbilical arteries
• D) umbilical arteries and umbilical vein

Understand the role of the central nervous system in sensory and motor function.

Describe the process and significance of reflex actions.

Explain the role of biological factors in psychological phenomena such as mood, perception, and behavior.

Understand the distinction between the peripheral and central nervous systems and their functions.

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Definitions:

Receptor Cells

Specialized cells found in the sensory organs that respond to specific stimuli like light, sound, or chemicals, and send signals to the brain.

Semicircular Canals

Structures within the inner ear that are key to maintaining balance and spatial orientation by detecting head rotations.

80-Decibel Sound

A sound intensity level; equivalent to the loudness of city traffic or a telephone dial tone.

60-Decibel Sound

A measure of sound intensity, corresponding to moderate levels of noise similar to background music or conversation in a restaurant.