Test Your Knowledge About Hair! Trivia Quiz

Explanation
Sebaceous glands are skin appendages that produce oil, known as sebum. These glands are found everywhere on the body except for the palms of the hands and the soles of the feet. Sebum helps to moisturize and protect the skin and hair. It is produced by the sebaceous glands and then released onto the surface of the skin through hair follicles. The presence of sebaceous glands throughout the body, except for the palms and soles, allows for the regulation of oil production and maintenance of healthy skin.

Explanation
Sebum is the correct answer because it is the product of the sebaceous gland. Sebum helps keep the skin soft and moist, and it also contains chemicals that have antimicrobial properties, which means they can kill bacteria. Therefore, sebum plays an important role in maintaining the health and integrity of the skin.

Explanation
Seborrhea refers to the overactivity of the sebaceous glands, which are responsible for producing sebum, an oily substance that lubricates the skin and hair. When the sebaceous glands produce excessive amounts of sebum, it can lead to the development of acne. Acne occurs when the excess sebum clogs the pores, causing inflammation and the formation of pimples, blackheads, or whiteheads. Therefore, seborrhea is the correct answer as it directly relates to the overactivity of the sebaceous glands and the subsequent development of acne.

Explanation
Eccrine glands are sweat glands that are responsible for regulating body temperature by producing sweat. When these glands open up, sweat is released onto the skin surface. This helps to cool down the body as the sweat evaporates. The other options, such as apocrine glands and acne, are not related to the process of opening up the viaducts to release sweat onto the skin surface.

Explanation
Apocrine glands are found in the genital and axillary regions. These glands secrete a thick, milky sweat that contains proteins and lipids. Unlike eccrine glands, which secrete sweat directly onto the skin surface, the ducts of apocrine glands empty into hair follicles. This type of sweat gland is responsible for body odor and is activated during times of emotional stress or sexual excitement.

Explanation
Eccrine glands are found all over the body and secrete a clear fluid composed of water, salts, vitamin C, urea, and lactic acid. These glands are supplied with nerve endings, allowing them to respond to stimuli such as heat and stress by producing sweat. Sweat produced by eccrine glands helps regulate body temperature by evaporating from the skin's surface.

Explanation
The part of hair that is visible and protrudes from the surface of the skin is called the shaft. It is the portion of the hair that we can see and touch. The shaft is made up of dead cells and is responsible for giving hair its color and texture. The root, on the other hand, is the part of the hair that is located beneath the skin's surface and is responsible for anchoring the hair follicle. The cuticle is the outermost layer of the hair shaft, and ear hairs are a specific type of hair found in the ears.

Explanation
The correct answer is "Cortex" because the given information states that it surrounds the medulla. From the options provided, only the cortex fits this description. The root, cuticle, and nails are not mentioned in relation to the medulla, so they are not the correct answer.

Explanation
Melanocytes are responsible for determining hair color. These specialized cells produce a pigment called melanin, which gives color to the hair. The amount and type of melanin produced by melanocytes determine the specific hair color, whether it is black, brown, blonde, or red. The activity of melanocytes can be influenced by various factors, such as genetics, hormones, and age, which can lead to changes in hair color over time.

Explanation
Arrector pili muscles are smooth muscle cells that connect the hair follicle to the dermal tissues. When these muscles contract, it causes the hair to stand on end, resulting in goose bumps. Therefore, the correct answer is Arrector Pili.