Tiny muscles attached to hair follicles that pull the hair upright during fright or cold are called?

Arrector Pili Muscle - This is a tiny muscle that attaches to the base of a hair follicle at one end and to dermal tissue on the other end. In order to generate heat when the body is cold, the arrector pili muscles contract all at once, causing the hair to "stand up straight" on the skin.

1. What are tiny smooth muscles that cause the hairs to stand upright during cold and frightful situations?
2. What is a sheath formed by epithelial and connective tissue?
3. What is the most numerous variety of perspiration gland?
4. What is found everywhere on body except palms of hands and soles of feet?
5. What is Piloerector muscle?
6. What do dermal papillae do?
7. What are the muscles in the skin called?
8. What secretion contains cell fragments?
9. What is the site of elastic and collagen fibers?
10. What is Merocrine sweat glands?
11. How are sebaceous glands associated with hair follicles?
12. What are apocrine sweat glands?
13. What are keratinocytes?
14. Where are sebaceous glands found?
15. What are melanocytes?

What are tiny smooth muscles that cause the hairs to stand upright during cold and frightful situations?

The arrector pili muscles, also known as hair erector muscles, are small muscles attached to hair follicles in mammals. Contraction of these muscles causes the hairs to stand on end, known colloquially as goose bumps (piloerection).

What is a sheath formed by epithelial and connective tissue?

hair follicle. sheath formed of both epithelial and connective tissues. apocrine glands.

What is the most numerous variety of perspiration gland?

The most numerous types of sweat glands in our skin, found almost everywhere on the body, are called eccrine glands.

What is found everywhere on body except palms of hands and soles of feet?

Sebaceous, or oil, glands, are attached to hair follicles and can be found everywhere on the body except for the palms of the hands and the soles of the feet. These glands secrete oil that helps keep the skin smooth and supple.

What is Piloerector muscle?

The piloerector (arrector pili) muscles, which cause skin hair to stand up (goose pumps); and the irises, which control the diameter of the pupils in the eyes, are example of smooth muscle structures[1–5]. ... The smooth muscle at different sites is much more heterogeneous than skeletal or cardiac muscle.

What do dermal papillae do?

You should notice that the dermis extends up into the epidermis in structures called dermal papillae. These have two functions. First, they help adhesion between the dermal and epidermal layers. Second, in areas of thick skin like this, they provide a large surface area, to nourish the epidermal layer.

What are the muscles in the skin called?

The arrector pili muscle is a tiny muscle connected to each hair follicle and the skin.

What secretion contains cell fragments?

Sebum is an oily mixture of lipids, cholesterol, and cell fragments. Dermis 5. The epidermis provides mechanical strength to the skin.

What is the site of elastic and collagen fibers?

The papillary part of the dermis is a thin sheet located just below the epidermis. It contains a small number of collagen and elastic fibers. The reticular layer of dermis lies deep into it, which contains larger bundles of collagen and elastic fibers that usually run parallel to surface of the skin.

What is Merocrine sweat glands?

Merocrine sweat glands are coiled tubular glands that discharge their secretions directly onto the surface of the skin. The clear secretion produced by merocrine glands is termed sweat, or sensible perspiration.

How are sebaceous glands associated with hair follicles?

Most sebaceous glands are associated with hair follicles. They generate and excrete sebum, a mixture of lipids, onto the skin surface, thereby naturally lubricating the dry and dead layer of keratinized cells of the stratum corneum, keeping it pliable.

What are apocrine sweat glands?

Apocrine glands in the skin and eyelid are sweat glands. Most apocrine glands in the skin are in the armpits, the groin, and the area around the nipples of the breast. Apocrine glands in the skin are scent glands, and their secretions usually have an odor.

What are keratinocytes?

Definition and Location. Keratinocytes represent the major cell type of the epidermis, the outermost of the layers of the skin, making up about 90 percent of the cells there. They originate in the deepest layer of the epidermis, the stratum basale and move up to the final barrier layer of the skin, the stratum corneum.

Where are sebaceous glands found?

Sebaceous glands are present everywhere on the human skin except for the palms, soles, and dorsa of the feet. Generally, they are associated with hair follicles and empty through a short duct into the canal of the hair follicle.

What are melanocytes?

(meh-LAN-oh-site) A cell in the skin and eyes that produces and contains the pigment called melanin. Enlarge. Anatomy of the skin, showing the epidermis, dermis, and subcutaneous tissue. Melanocytes are in the layer of basal cells at the deepest part of the epidermis.