What stimulates the chemoreceptors to function?

Sebaceous glands are microscopic glands in the skin that secrete an oily or waxy substance called sebum into the hair follicles or onto the skin surface.

Sebum lubricates and protects the skin and hair from drying out and from infections caused by bacteria or fungi. Sebum also contributes to body odour.

A. To secrete cerumen or earwax. This statement is wrong because cerumen is produced by specialized sweat glands in the ear canal, not by sebaceous glands. B. To produce hair growth.

This statement is wrong because hair growth is determined by the activity of hair follicles, not by sebaceous glands. Sebaceous glands only deposit sebum on the hairs and bring it to the skin's surface.

D. To excrete perspiration or sweat.

This statement is wrong because perspiration is produced by sweat glands, not by sebaceous glands. Sweat glands are different from sebaceous glands in their structure, location and function. Sweat glands help regulate body temperature and eliminate waste products through the skin.

The pituitary gland is commonly known as the “master gland” because it controls the hormone production of other glands. It secretes nine hormones that regulate growth, metabolism, reproduction, stress response and more.

Choice B. Endocrine is wrong because endocrine is not a specific gland, but a system of glands that produce hormones.

Choice C. Thyroid is wrong because thyroid is a gland that produces hormones that regulate metabolism, growth and development.

It does not control other glands.

Choice D. Liver is wrong because liver is not an endocrine gland, but an organ that performs many functions such as digestion, detoxification and blood clotting.

It does not produce hormones that regulate other glands.

Normal ranges for pituitary hormones vary depending on the type of hormone, age, sex and other factors.

For example, the normal range for growth hormone in adults is 0.4 to 10 nanograms per milliliter (ng/mL), while the normal range for prolactin in women who are not pregnant or breastfeeding is 4 to 23 ng/mL.

Fallopian tubes. Fertilization of an ovum usually takes place in the uterine tube, also known as the fallopian tube. This is the structure that transports the ovum from the ovary to the uterus.

Choice A is wrong because the cervix is the lower part of the uterus that connects to the vagina. It does not receive or transport the ovum.

Choice C is wrong because the ovaries are the organs that produce and release the ova. They do not host the fertilization process.

Choice D is wrong because the horn of the uterus is the point where the uterine tube joins the uterus. It is not the site of fertilization.

The normal range of temperature for human body is 36.5–37.5 °C (97.7–99.5 °F).

The tibialis anterior muscle is located in the lower leg, on the lateral side of the tibia.

It originates from the lateral condyle and surface of the tibia and the interosseous membrane, and inserts into the medial cuneiform and first metatarsal bones of the foot. It acts to dorsiflex and invert the foot.

Choice A is wrong because the upper arm does not contain the tibialis anterior muscle.

The upper arm contains muscles such as biceps brachii, triceps brachii, and brachialis.

Choice C is wrong because the thigh does not contain the tibialis anterior muscle.

The thigh contains muscles such as quadriceps femoris, hamstrings, and adductors.

Choice D is wrong because the abdomen does not contain the tibialis anterior muscle.

The abdomen contains muscles such as rectus abdominis, obliques, and transversus abdominis.