Which Part of a Hair Would Be Activated to Send

question 4

Multiple Choice

Which part of a hair would be activated to send a nerve impulse if an insect crawling on your arm bumped the hair?

• A) arrector pili
• B) hair follicle
• C) hair root plexus
• D) dermal root sheath
• E) hair matrix

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Definitions:

Arteries

Blood vessels that carry oxygenated blood away from the heart to various parts of the body.

Plaque

A sticky deposit on teeth that can harbor harmful bacteria, leading to dental issues like cavities and gum disease.

Heart Murmur

Abnormal sounds during the heartbeat cycle—such as whooshing or swishing—caused by turbulent blood flow.

Heart Disease

A range of disorders affecting the heart, such as coronary artery disease, arrhythmias, and congenital heart defects.