Chapter 6 Integumentary System A&P Mcgraw
A hemangioma is a congenital anomaly that results in skin discoloration due to ____ that proliferate and form a benign tumor.
Blood vessels
The predominant type of protein fiber found in the dermis is...
Collagen
In thick skin, the layers of epidermis that contain dead keratinocytes are the stratum lucidum and stratum ______.
Corneum
The epidermal ridges interdigitate with the...
Dermal Papillae
Mammary glands only become functional in which of the following conditions.
Lactating females, pregnant females
The ____ layer of the dermis contains areolar connective tissue and dermal pappillae.
Papillary
The main functions of the subcutaneous layer are which of the following?
Provides thermal insulation, protects the body, acts as an energy reservoir
The ___ of the dermis forms the deeper, major portion of the dermis and extends from the papillary layer to the underlying subcutaneous layer.
Reticular layer
The skin houses two types of general exocrine glands: ___ glands and ___ glands.
Sebaceous, sweat
______ acts as a lubricant to keep the skin and hair from becoming dry, brittle and cracked.
Sebum
On many parts of the body, the components of the dermis include blood vessels, ____ glands, ______ glands, hair follicles, nail roots, sensory nerve endings, and smooth muscle tissue.
Sweat, Sebaceous
The major function of merocrine sweat glands is _____.
Thermoregulatin
Two types of sweat glands in the skin are _____ sweat glands and ______ sweat glands.
apocrine eccrine
Which are functions of the skin?
heat regulation, barrier to water loss, calcitriol production
The cells of the stratum corneum contain large amounts of the protein _____.
keratin
The major functions of merocrine sweat glands are...
secretion, protection, thermoregulation
Skin is either classified as either thick or thin based on two parameters; the number of epidermal _______ in the epidermis and the relative _______ of the epidermis, rather than the thickness of the entire integument.
strata, thickness
Tactile cells are described best by which of the following?
can be stimulated by light touch can be stimulated by light pressure large epithelial cells also called merkel cells