Passive Transport (Ch.4)
Movement of molecules from high to low concentration without energy...
Diffusion
Single layer of flat cells where diffusion occurs
Simple squamous epithelium
Most abundant connective tissue cell that produces fibers
Fibroblasts
The outermost layer of the skin
Epidermis
The body’s normal set point temperature in °C
37°C
Fiber type that can stretch and return to its original shape
Elastic fibers (elastin)
Muscle tissue responsible for involuntary movement of hollow organs
Smooth Muscle
Water movement across a selectively permeable membrane
Osmosis
Single layer of cube-shaped cells that line kidney tubules
Simple cuboidal epithelium
Connective tissue that stores fat and insulates the body
Adipose tissue
Protein that hardens and waterproofs skin cells
Keratin
The type of sweat gland most numerous in the body
Eccrine
Thin, branching fibers that form delicate supporting networks
Reticular fibers
Wavelike contractions of smooth muscle that move food through the digestive tract
Peristalsis
A solution with higher solute concentration outside the cell
Hypertonic
Cells that produce mucus in epithelial tissues
Goblet cells
Tissue with chondrocytes in lacunae and a gel-like matrix
Cartilage
Pigment that protects against UV damage
Melanin
Type of burn that destroys the epidermis only
First Degree burn
Connective tissue that binds skin to underlying organs and fills spaces
Areolar tissue
Special property of cardiac muscle that allows it to contract without nervous stimulation
Autorhythmicity
A solution that causes a cell to swell
Hypotonic
Type of epithelium that lines the bladder and stretches
Transitional epithelium
Dense connective tissue found in tendons and ligaments
Dense regular connective tissue
The layer beneath the dermis that contains adipose tissue
Subcutaneous layer (hypodermis)
Pigment that gives skin a yellowish color from diet
Carotene
Strongest connective tissue fiber with high tensile strength
Collagen fibers
The insulating sheath around axons that speeds nerve impulse conduction
Myelin
If a red blood cell is placed in a hypertonic solution, describe what happens to it and why (use the correct term)
The cell loses water by osmosis and shrinks (crenation).
Epithelium with multiple layers of flat cells, keratinized in skin
Stratified squamous epithelium
Hardest connective tissue that supports and protects structure
Bone (osseous tissue)
Gland type that secretes oily sebum
Sebaceous glands
The vitamin produced by skin that helps with calcium absorption
Vitamin D
The main fixed cell in connective tissue that produces fibers
Fibroblasts
Specialized junctions between cardiac muscle cells that allow rapid signal conduction
Intercalated discs