Lecture 6 Tissue Level of Organisation

Vocabulary flashcards covering key terms and definitions related to tissues in Anatomy & Physiology I.

Epithelial Tissue

A tissue type that covers body surfaces and lines internal organs.

Connective Tissue

A tissue type that supports and protects other tissues.

Nervous Tissue

A tissue type that sends and receives information about stimuli.

Muscle Tissue

A tissue type responsible for movement.

Avascular

Lacking blood vessels; characteristic of epithelial tissue.

Polarity

The presence of distinct regions in epithelial cells, such as the apical and basal ends.

Simple Epithelium

A single layer of cells that functions in absorption, diffusion, secretion, filtration, and lubrication.

Stratified Epithelium

Multiple layers of cells primarily providing protection.

Squamous Cells

Flattened cells primarily involved in absorption and diffusion.

Cuboidal Cells

Box-like cells primarily involved in secretion and absorption.

Columnar Cells

Rectangular cells primarily involved in secretion, absorption, and lubrication.

Transitional Epithelium

A type of epithelium that changes shape depending on the state of stretch.

Merocrine Glands

Exocrine glands that secrete substances via exocytosis without losing cellular material.

Apocrine Glands

Exocrine glands that pinches off a portion of the cell to release secretion.

Holocrine Glands

Exocrine glands that rupture to release their entire contents.

Chondrocytes

Cells found in cartilage.

Osteon

The structural unit of compact bone.

Excitability (of neurons)

The ability of neurons to respond to environmental changes.

Conductivity (of neurons)

The ability of neurons to conduct electrical signals.

Secretion (of neurons)

The process where neurons release neurotransmitters in response to an electrical signal.