Histology Unit

Tissues

a group of similar cells that perform a specific function in the body

Epithelium

a layer of cells that covers the surface of the body and lines internal organs and cavities

Basement membrane

a thin layer of protein fibers that separates epithelial tissue from underlying connective tissue

Simple squamous

a type of epithelial tissue that is made up of thin, flat cells arranged in a single layer

Simple cuboidal

a type of epithelial tissue that is made up of cube-shaped cells arranged in a single layer

Simple columnar

a type of epithelial tissue that is made up of tall, cylindrical cells arranged in a single layer

Pseudostratified columnar

a type of epithelial tissue that is made up of cells of different heights that appear to be arranged in multiple layers but are actually all in contact with the basement membrane

Stratified squamous

a type of epithelial tissue that is made up of multiple layers of flattened cells

Stratified cuboidal

a type of epithelial tissue that is made up of multiple layers of cube-shaped cells

Transitional epithelium

a type of epithelial tissue that can change shape and stretch to accommodate the movement of organs and structures within the body.

Glandular epithelium

an epithelial tissue that forms the walls of glands

Exocrine gland

a gland that releases its secretions through a duct onto an epithelial surface

Endocrine gland

a gland that releases its secretions directly into the bloodstream

Connective tissue

a type of tissue that provides support and protection to the body

Collagen

a protein that is the main component of connective tissue and gives strength and flexibility to tissues.

Reticulin

a type of connective tissue that forms a supportive network and holds cells together

Elastin

a protein that gives elasticity to connective tissue, allowing it to stretch and return to its original shape

Areolar tissue

a type of loose connective tissue that fills spaces and attaches surfaces together

Adipose

a type of connective tissue that stores energy in the form of fat

Dense connective

a type of connective tissue that provides support and strength, and is made up of closely packed fibers

Loose connective

a type of connective tissue that provides cushioning and holds organs in place

Hyaline cartilage

a type of cartilage that is smooth and glossy and provides support and flexibility

Elastic cartilage

a type of cartilage that contains a large amount of elastic fibers, allowing it to stretch and return to its original shape

Fibrocartilage

a type of cartilage that is strong and can withstand heavy compression and tension

Blood

a fluid connective tissue that carries oxygen and nutrients to the body's cells and removes waste products

Bone

a hard and rigid connective tissue that forms the skeleton

Osteocytes

cells found in bone tissue

Serous membrane

a thin layer of tissue that lines the inside of certain body cavities

Mucous membrane

a type of membrane that lines body cavities that open to the outside, such as the mouth and nose

Cutaneous membrane

another name for skin

Skeletal muscle

a type of muscle that is attached to the skeleton and is responsible for movement

Smooth muscle

a type of muscle that is found in the walls of organs and blood vessels and is responsible for involuntary movement

Cardiac muscle

a type of muscle that makes up the heart and is responsible for pumping blood through the body

Nervous tissue

a type of tissue that forms the brain, spinal cord, and nerves, and is responsible for communication and control of bodily functions.