chapter 5 smart book Flashcards
Melanosomes are transferred to keratinocytes in the stratum basale via the process of ______ or exocytosis.
phagocytosis
In the layer of the epidermis called the stratum ______, the process of keratinization begins.
granulosum
Melanin is transferred in membrane-bound vesicles from _____ to keratinocytes in the stratum basale.
mealnocyes
During the process of keratinization, ______ disintegrate and the cells start to die. Also their membranes become thicker and less permeable.
organelles
Hemoglobin exhibits a ______ color.
red
There are two types of melanin, _________ and pheomelanin, together they produce various ratios of yellow, reddish, tan, brown, and black shades
eumelanin
Melanosomes are transferred to keratinocytes in the stratum basale via the process of ______ or exocytosis.
phagocytosis
The main structural components of the reticular layer is primarily a network of ______ fibers that extend internally from the reticular layer of the dermis into the underlying subcutaneous layer.
collagen
During the process of keratinization, ______ disintegrate and the cells start to die. Also their membranes become thicker and less permeable.
organelles
The reticular layer contains ______
dense irregular connective tissue
Vasodilation of the dermal blood vessels means that the diameter of the vessels ______, so relatively ______ blood can travel through them.
increase , more
The reticular layer of the dermis is __
deep to the papillary layer
The nail matrix is the __
actively growign part
The connective tissue root sheath of a hair follicle are derived from the ______.
dermis
Extending from the dermal papillae to the mid-region of the hair follicles are thin ribbons of smooth muscle that are collectively called the ______ muscles.
arrector pili
The reticular layer contains ___
dense irregular connective tissue
Extending from the hair follicle to dermal papillae are muscles called _____.
arrector pili
The root and shaft of a hair consist of ______ epithelial cells, while the hair bulb contains ______ epithelial cells.
dead, living
The connective tissue root sheath of hair originates from the ______.
Multiple choice question.
dermis
The two types of sweat glands in the skin are ______ sweat glands and ______ sweat glands.
merocrine, apocrine
Gray hair results from the gradual reduction of ______ production.
melanin
Sebaceous glands are classified as ______ glands that discharge an oily, waxy secretion called ______.
holocrine, sebum
The skin houses two types of general exocrine glands, which are ________ glands and _______ glands.
sweat, sebaceous
A type of gland associated with a hair follicle is usually a ______ gland.
sebaceous
