뒤로Tissues and Histology - Anatomy & Physiology
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Histology is the study of tissues, their structure, and function in the body.
The four primary tissue types are epithelial, connective, muscle, and nervous tissue.
Epithelial tissue covers body surfaces, lines cavities, and forms glands for protection, absorption, and secretion.
Epithelial tissue has cells closely packed with minimal extracellular matrix and is avascular.
Connective tissue supports, binds, and protects organs and tissues in the body.
Connective tissue consists of cells, fibers, and an extracellular matrix.
Muscle tissue is specialized for contraction and movement.
The three types are skeletal, cardiac, and smooth muscle.
Nervous tissue transmits electrical signals to coordinate body functions.
Neurons and neuroglia compose nervous tissue.
The extracellular matrix is the non-cellular component providing structural and biochemical support to surrounding cells.
Epithelial tissue receives nutrients by diffusion from underlying connective tissue.
The basement membrane is a thin layer that anchors epithelial tissue to underlying connective tissue.
Tendons are connective tissues that connect muscles to bones.
Ligaments connect bones to other bones at joints.
Collagen fibers provide tensile strength and structural support.
Cardiac muscle is involuntary and found only in the heart.
Skeletal muscle is voluntary and attaches to bones for movement.
Smooth muscle is involuntary and found in walls of hollow organs like intestines and blood vessels.
Neuroglia support, protect, and nourish neurons in nervous tissue.