The Reason the Homunculus for the Motor Cortex Is Shaped

question 97

Multiple Choice

 The reason the homunculus for the motor cortex is shaped the way it is (huge face, large hands) is that

• A) it is a drawing of all the motor functions of the body, and it is not drawn to scale.
• B) the amount of cortex devoted to each part of the body is represented by the relative size of the body part.
• C) it is a reproduction of a drawing done in the late eighteenth century.
• D) there is an inverse relationship between the actual size of each body part to its representation in the homunculus drawing.

---

Definitions:

Resting Stage

A phase in the cell cycle or physiological process where cells or organisms are in a state of inactivity or minimal activity, preparing for subsequent activity or growth.

Skin Surface

The outermost layer of the skin that protects the body from the external environment, including pathogens and physical damage.

Hair Bulb

The rounded, bulbous base of a hair follicle containing actively dividing cells which produce the hair shaft.

Cuticle

The cuticle is a protective and waxy or hard outer layer found on the surface of plants, hairs, nails, and other surfaces, serving as a barrier against environmental damage.