Figure 4.5 Using the Above-Referenced Drawing of a Single Hair Follicle in a Single

question 12

Multiple Choice

Figure 4.5

Using the above-referenced drawing of a single hair follicle in longitudinal section, indicate the specified labeled part in each of the following questions.
-Identify the structure indicated by Label D.

• A) Medulla
• B) Sweat gland duct
• C) Arrector pili muscle
• D) Hair root
• E) Connective tissue sheath

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Definitions:

Ethmoid Bone

A spongy, delicate bone that forms part of the cranial floor and nasal cavity, contributing to the nasal septum and the orbital walls.

Nasal Conchae

Long, narrow, curled shelves of bone that protrude into the breathing passage of the nose to increase surface area for moistening, warming, or cooling the air entering the lungs.

Ethmoid Bone

A sponge-like, cube-shaped bone located between the eyes, forming a portion of the nasal cavity and the eye sockets.

Auditory Ossicles

Three small bones (the malleus, incus, and stapes) located in the middle ear that transmit sound vibrations from the eardrum to the inner ear.