Epidermis
The top layer of the Epidermis composed of 15-20 layers of skin cells?
Stratum Corneum
What tissue makes up 80% of the Subcutaneous layer of the skin?
Adipose Tissue/Subcutis tissue
How many layers are within the dermis?
2 Layers
What are the 4 appendages of the skin?
Hair, Nails, Sebaceous gland and Sudoriferous gland
What are the 3 types of immune cells?
Leukocytes, Langerhans, and T-cells
The layer of the Epidermis where production of keratin and intercellular lipids takes place. Desmosomes are dissolved with enzymes and they become keratinized?
Stratum Grannulosum
the other 2 names the Subcutaneous layer can be referred to as?
Hypodermis + Superficial Fascia
Of the 2 layers of the epidermis, what layer is composed of Collagen and Elastin?
Reticular Layer
What are the two types of keratin that are found in the hair appendage?
Alpha keratin (hard keratin)
Beta Keratin (Soft Keratin)
Merkel Cells
The largest layer of the epidermis where cells continue to divide, change shape and enzymes create lipids and proteins?
Stratum Spinosum
What is the main purpose of the subcutaneous layer?
Provides protective cushion, contour, smoothness to the body, and a source of energy to the body.
What layer of the skin are Glycosaminoglycans and Hyaluronic acid located in?
The papillary layer
What is the technical term for the Nail?
Onyx
Antioxidants provide protection from what?
Free radical damage, Pollution and Blue Light.
The germination layer where all cell mitosis takes place. Sensory cells/MERKEL CELLS are also located here?
Stratum Germinativum/Basale layer
a thick subcutaneous layer may indicate what?
A Hormonal disorder
The fluid in the dermis that is composed of collagen, other proteins and GAG's is called what?
hormones and genetics influence which appendage of the skin?
The hair
cell stimulators are called what?
Fibroblasts
Starting with the deepest layer, name all five layers of the epidermis in order as they would appear in skin?
Stratum Basale/Germinativum → Stratum Spinosum → Stratum Granulosum → Stratum Lucidum → Stratum Corneum?
aside from adipose tissue what are 4 other components of the subcutaneous layer of the skin?
Vessels, Nerves, Fibers and Fibroblasts
the "layer" of the skin where the epidermis and the dermis connect and meet is called?
The dermal epidermal junction
What are the two types of Sudoriferous glands and their function?
Apocrine - Connected to the hair follicle and secret swear through the sebaceous gland.
Eccrine - Not connected to the follicle and excrete sweat through the pores. the pores are found all over the body but most abundant on the forehead, palms of the hands and soles of the feet.
explain the two types of nerves and their purpose
Motor nerves/Efferent nerves - nerve fibers that send messages from the brain and spinal cord to your muscles or glands to stimulate the muscle.
Sensory nerves/Afferent nerves - nerve fibers that send messages to the central nervous system and brain to react to heat, cold, pain, pressure, and touch.