subcutaneous layer. When they contract in response to a stimuli such as cold, fear, and touch we get goose bumps, The upward fingerlike extensions of the dermis. 5.6 shows the three layers of fat in a fat-type pig. Tags: Topics: Question 42 . In the face, skeletal muscles attach to dermal collagen fibers and produce such expressions as a smile, a wrinkle of the forehead, or the lifting of an eyebrow, Smooth muscle, or piloerector muscles, are associated with hair follicles. Fingers have a thick stratum corneum and they lack the sebaceous glands that produce water-resistant oil elsewhere on the body. What is the main function of the Integumentary System. It consists of dense irregular connective tissue, Stretch marks are caused by tears in the collagen fibers caused by stretching of the skin due to pregnancy or obesity. Q 20 . What are the cause of prune fingers specifically? Concentrates in the stratum corneum and subcutaneous fat. What contributes to the durability of the epidermis? The stratum basale is directly above what? Results from mechanical stress such as manual labor. Hypodermis. Contains melanocytes, tactile cells, and stem cells scattered around. It has shrunken fibers of keratin and shriveled nuclei. What affects the rate of a keratinocyte's life span? CONTACT DERMATITIS. Which of the following increases melanocytic activity? They aren't essentially dangerous but should be watched for changes in color and size which may indicate malignancy (or skin cancer). carotene. This layer is rich in small blood vessels, Deeper and much thicker layer of dermis. The stratum granulosum is composed of what? What beneficial effects does UV rays have on the skin? It is thickest in areas of the body such as the buttocks, palms, and soles of the feet.Subcutaneous fat is the most widely distributed layer of subcutaneous tissue and is made up of adipocytes. People of all races have the same number of these? The layer of dividing cells at the base of the epidermis is the. Marks sites where the skin folds during flexion of the joints, Flat melanized patches that vary with heredity and exposure to the sun, An elevated patch of melanized skin, often with hair, Moles are sometimes refered to as beauty marks. Has numerous desmosomes and cell shrinkage produces spiny appearance. The stratum spinosum contains dendritic cells. A dense irregular connective tissue (type of fibrous connective tissue) layer beneath the epidermis, The dermis is composed of mainly collagen with elastic fibers, reticular fibers, and fibroblasts. What is the proportion of the papillary and reticular layers in the dermis? The body retains heat by constricting blood vessels of the dermis (vasoconstriction), decreasing flow of blood to the surface of the skin. What is the difference of melanin containment in light skinned people? How do the deep cells acquire nutrients for mitosis? These sensory receptors respond to temperature changes and factors that damage tissues (pain)? Related questions. Other barrier functions. (4)Keratinocyte nucleus and other organelles degenerate and cells die due to the barriers, Forms between the stratum granulosum and stratum spinosum which is crucial to the retention of body water and preventing dehydration. The stem cells give rise to keratinocytes that migrate toward the skin surface. The dermis also contains these types of muscle fibers. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue. List the two major functions of the subcutaneous layer. The Subcutaneous tissue, also called the hypodermis, hypoderm, subcutis, It is the lowermost layer of the integumentary system in vertebrates. The adipose of the subcutaneous layer does what to help conserve body heat? This muscle in the dermis is responsible for facial expression? Subcutaneous emphysema (SCE, SE) occurs when gas or air travels under the skin.Subcutaneous refers to the tissue beneath the skin, and emphysema refers to trapped air. It's made up of fat and connective tissues that house larger blood vessels and nerves, and it acts as an insulator to help regulate body temperature. It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The subcutaneous layer is also an important line of defense, protecting the fragile organs and bones from outside forces, such as pathogens. What is located beneath the stratum granulosum? Subcutaneous fat is 8% thicker in women than men. What is another factor that contributes to skin color? The epidermal layers of the skin are determined by what? What are the five types of cells of the epidermis? These sensory receptors are located in the deep dermis and respond to heavy pressure? The fat insulates the body against both heat and cold, while the blood vessels and nerves woven throughout it help to regulate temperature. Explore answers and all related questions . 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