lecture 12 Human Anatomy and Physiology I: Tissues

Vocabulary flashcards based on the lecture notes on tissues in Human Anatomy and Physiology.

Tissues

Groups of cells having a common structure and/or function.

Extracellular Matrix (ECM)

Non-living material surrounding cells, synthesized by them, made up of ground substance and protein fibers.

Epithelium

A type of tissue defined by its morphology, serving functions such as protection and secretion.

Connective Tissue

Tissue that is supportive and structural, characterized by the presence of extracellular matrix.

Muscle Tissue

Tissue that is contractile, defined by its function.

Nerve Tissue

Tissue that is irritable and responsive, defined by its function.

Ground Substance

A major component of the ECM, made of glycoproteins and water.

Collagen

The most common protein fiber in connective tissue, providing strength.

Elastin

A protein that provides stretchability to tissues.

Tight Junctions

Cell junctions that sew cells together and prevent diffusion.

Desmosomes

Cell junctions that hold cells together, providing structural integrity.

Gap Junctions

Cell junctions that allow transfer of substances between adjacent cells.

Body Systems

Systems in the human body that are composed of tissues, such as the integumentary and muscular systems.

Exocrine Glands

Glands with ducts that transport glandular secretions to specific locations.

Endocrine Glands

Ductless glands that secrete hormones directly into the bloodstream.

Merocrine Glands

Glands that release secretory vesicles through exocytosis.

Holocrine Glands

Glands that rupture to release their secretions.

Apocrine Glands

Glands that release their secretions by pinching off a portion of the plasma membrane.