Histology

Epithelial Tissue

Tissue type comprising closely packed cells that form barriers and cover body surfaces.

Connective Tissue

Tissue characterized by widely spaced cells embedded in a matrix, providing support and structure.

Muscle Tissue

Tissue consisting of closely packed cells that are specialized to generate force.

Nervous Tissue

Tissue made up of neurons and supporting cells responsible for electrical signaling.

Biopsy

The removal of tissue from a living body for diagnostic examination.

Autopsy

The examination of tissues after death to determine the cause of death.

Endoderm

The inner germ layer that develops into internal organs.

Mesoderm

The middle germ layer that forms muscle, bone, and blood vessels.

Ectoderm

The outer germ layer that gives rise to the skin and nervous system.

Basement Membrane

Thin layer that connects epithelial cells to the underlying tissue and supports cell migration during repair.

Simple Squamous Epithelium

A tissue type with a single layer of flat cells, allowing for diffusion and filtration.

Stratified Squamous Epithelium

A tissue type with multiple layers of flat cells, providing protection against abrasion.

Tight Junctions

Cell connections that bind adjacent epithelial cells and form a permeability barrier.

Adipose Tissue

A type of loose connective tissue that stores fat and provides insulation and cushioning.

Hyaline Cartilage

A type of cartilage that is smooth and flexible, found in structures like the trachea and ribs.

Skeletal Muscle

Striated muscle tissue under voluntary control, involved in body movement.

Cardiac Muscle

Striated, involuntary muscle tissue that makes up the heart.

Merocrine Secretion

A mode of secretion where substances are released via exocytosis.

Apocrine Secretion

A mode of secretion where a portion of the cell is pinched off during the release of substances.

Holocrine Secretion

A mode of secretion where the entire cell is shed during the release of substances.

Neurons

Specialized cells within nervous tissue that are responsible for transmitting electrical signals.

Mucous Membrane

Membranes that line cavities open to the exterior, such as those in the respiratory and digestive tracts.

Inflammatory Response

The body's reaction to injury or infection that involves redness, heat, swelling, pain, and loss of function.

Regeneration

The process of replacing damaged tissue with the same type of cells to restore function.

Labile Cells

Cells that continuously divide and can regenerate quickly, such as skin cells.

Stable Cells

Cells that can divide after injury, such as liver cells.

Permanent Cells

Cells that do not regenerate, such as neurons and cardiac muscle cells.

 List and explain the general characteristics of epithelial tissue and its functions

Epithelial tissue has tightly packed cells, polarity, no blood vessels, and regenerates quickly. It functions in protection, absorption, secretion, and sensation.

Describe the major functions of epithelial tissue.

Epithelial tissue primarily functions in protection, absorption, secretion,barrier, and sensation

simple cuboidal epithelium

a type of epithelial tissue composed of a single layer of cube-shaped cells, involved in secretion and absorption.

stratified cuboidal epithelium

a type of epithelial tissue consisting of multiple layers of cube-shaped cells, primarily involved in secretion and protection.

Pseudostratified Epithelium

Single-layered epithelium appearing multi-layered due to varying cell heights.

Exocrine Glands

Glands that secrete substances through ducts to the surface of an organ or into body cavities.

Endocrine Glands

glands that secrete hormones directly into the bloodstream, regulating various bodily functions.

Unicellular Glands

glands consisting of a single cell, that secrete mucus or other substances.

Multicellular Glands

composed of multiple cells and can be complex

Categorize glands based on their structure

Unicellular and Multicellular

Categorize glands based on their function.

Endocrine and Exocrine

List and describe the major functions of connective tissue.

Connective tissue supports, binds, protects organs, stores energy, and aids in transportation of substances.

Identify the specialized cells found in connective tissue.

Specialized cells in connective tissue include fibroblasts, adipocytes, macrophages, and leukocytes.

 Describe the three main components of the extracellular matrix of connective tissue and what they provide.

fibers, ground substance, and tissue fluid. Fibers provide strength and support, ground substance fills the space between cells, and tissue fluid facilitates the movement of nutrients and waste.

Explain how adult connective tissue is classified.

loose, dense, cartilage, bone, and blood:

What are the functions of Loose Connective Tissue?

Connective tissue types have distinct functions: loose connective tissue supports organs and allows for flexibility

What are the functions of Dense Connective Tissue

dense connective tissue provides strength and resistance to stretching

What is the function of Cartilage

cartilage offers cushioning and support

What are the functions of Bone?

bone provides structural support and protection

What are the functions of blood?

blood transports nutrients and waste.

State the location of each type of connective tissue in the body.

Connective tissues are located throughout the body, including cartilage in joints, bone in the skeleton, and blood within the circulatory system.

What are the three types of muscle tissue.

The three types of muscle tissue are skeletal, cardiac, and smooth.

Skeletal Muscle

Striated muscle tissue under voluntary control, found in limbs and body wall.

Cardiac Muscle

Striated, involuntary muscle tissue that makes up the heart.

Smooth Muscle

Involuntary muscle tissue found in walls of hollow organs such as the intestines and blood vessels.

Neurons and Glia in Nervous Tissue

Neurons transmit electrical signals, while glia support, protect, and nourish neurons.

Structural and Functional Characteristics of Synovial Membranes

Synovial membranes are connective tissue layers lining joints, producing synovial fluid to lubricate and nourish cartilage.

Explain how inflammation protects the body.

Inflammation activates immune cells, increases blood flow, and releases signaling molecules to eliminate pathogens and facilitate healing.

Relate the five major signs of inflammation.

The five major signs of inflammation are redness, heat, swelling, pain, and loss of function, which indicate the body's response to injury or infection.

Describe the general makeup of a tissue.

A tissue is composed of a group of similar cells that work together to perform a specific function, along with the extracellular matrix that provides support and structure.