Lab terms 6 & 7 Pt 2 Flashcards
Cartilage
Primary Tissue Type: Connective
Hyaline Cartilage
Smooth, glassy matrix, chondrocytes
Elastic Cartilage
Elastic fibers, more flexible, chondrocytes
Fibrocartilage
Dense fibers, resilient, chondrocytes
Dense Irregular Connective Tissue
Primary Tissue Type: Connective
Important Features: Collagen fibers in various directions, strength in multiple directions
Dense Regular Connective Tissue
Primary Tissue Type: Connective
Important Features: Parallel collagen fibers, tensile strength, fibroblasts
Reticular Tissue
Primary Tissue Type: Connective
Important Features: Network of reticular fibers, supports soft organs
Lymphocyte
In blood
Fibroblast
In loose connective tissues
Adipocyte
In adipose tissue
Chondrocyte
In cartilage
Osteocyte
In bone
Erythrocyte
In blood
Matrix Features:
Collagen fiber
Elastic fiber
Ground substance
Epidermis:
The outermost layer of skin, composed of stratified squamous epithelium. It provides a barrier to environmental damage and prevents water loss.
Dermal Papillae
Projections of the dermis into the epidermis that contain blood vessels and nerve endings. They help anchor the two layers together and increase the surface area for exchange.
Dermis
The thick layer beneath the epidermis, consisting of connective tissue, blood vessels, nerves, and hair follicles. It provides strength, elasticity, and housing for various skin structures.
Subcutaneous Layer (Hypodermis)
The deepest layer of skin, made of loose connective tissue and fat. It provides insulation, cushioning, and energy storage.
Thick Skin
Found on the palms of the hands and soles of the feet, thick skin has a thicker epidermis and lacks hair follicles. It has more layers of keratinocytes for protection.
Thin Skin
Covers most of the body and contains hair follicles, sebaceous glands, and fewer layers of keratinocytes compared to thick skin.
Eccrine Sweat Glands
Sweat glands that are found throughout the body, primarily in the palms, soles, and forehead. They help regulate body temperature through perspiration.
Arrector Pili Muscle (Piloerector Muscle)
Small muscles attached to hair follicles that contract to make hair stand up (goosebumps) in response to cold or fear.
Hair Root
The part of the hair embedded in the follicle beneath the skin surface, responsible for hair growth.
Hair Shaft
The visible part of the hair that extends above the skin surface.
Sebaceous Oil Gland
Glands associated with hair follicles that secrete sebum, an oily substance that lubricates the skin and hair, helping to prevent dryness.
