sebum: [ se´bum ] the oily secretion of the sebaceous glands, whose ducts open into the hair follicles. Anatomy and Physiology of Integumentary System (Secondary) Description. Definition (CSP) small, sacculated organs found within the dermis which secrete sebum; ducts from most sebaceous glands open into a hair follicle but some open on the general surface of the skin. Definition. A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. The ducts from most sebaceous glands open into a HAIR FOLLICLE, but some open on the general surface of the SKIN. Sebaceous glands secrete SEBUM. They are holocrine glands, i.e., the sebum consists of the entire secreting cells. Mixture of lipids. What do fatty acids of sebum do. Sebaceous glands are the oil-secreting tissue in mammalian skin.When a slice of the epidermis is examined under a microscope, we see a hair follicle that has pierced through the skin’s surface into the subcutaneous layer. It is composed of fat and epithelial debris from the cells of the malpighian layer, and it lubricates the skin. Associated with hair follicles in hair covered areas: Sebaceous glands secrete SEBUM. Definition: branched alveolar glands that are found all over the body except for in the thick skin o the palms and soles. Inter-individual differences in the level of sebum secretion are responsible for the different types of skin texture: dry skin or brittle hair is the consequence of low sebum secretion, whereas oily skin or greasy hair will be the consequence of a higher sebum secretion, which is known as hyperseborrhoea. My Flashcards. Definition: Sebaceous glands are numerous microscopic glands in the dermis that usually open into the hair follicles and secrete sebum. made up of stratum corneum: Supporting users have an ad free experience! What do fatty acids of sebum have. • Also called oily glands because the glands secrete an oily substance called sebum. Antibacterial properties. • Sebaceous glands are small on the body trunk and limbs, but … Sebaceous definition is - secreting sebum. Definition A bundle of smooth muscle cells attached to each hair follicle contracts to straighten and raise the hair follicle, resulting in piloerection (goosebumps). Key Concepts: Terms in this set (9) Sebaceous Glands Definition. Sebum and skin and hair textures. Tweet . ... Sebum Definition. Smegma is the thick, white, cheesy substance that collects under the foreskin of the penis.It's more common in uncircumcised men who don't clean that area well enough. Science Olympiad - Anatomy. Smegma clitoridis is defined as the secretion of the apocrine glands of the clitoris, in combination with desquamating epithelial cells. The accumulation of sebum combined with dead skin cells forms smegma. Sebaceous Glands Definition. ... enlarged these with an accumulation of sebum can cause blackheads (color is from melanin and oxidized oil) Term. Location: Found everywhere on the skin apart from the palms and soles Types of Sebaceous glands: 1. How to use sebaceous in a sentence. Definition (CSP) small, sacculated organs found within the dermis which secrete sebum; ducts from most sebaceous glands open into a hair follicle but some open on the general surface of the skin. Nerve impulses are stimulated when a person is cold or emotionally upset. Prevent water loss from skin in low-humidity environments. 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