Practical I

Simple squamous epithelium

Flat cells; found in alveoli and blood vessels; functions in diffusion and filtration.

Simple cuboidal epithelium

Cube-shaped cells; found in kidney tubules and glands; functions in secretion and absorption.

Simple columnar epithelium

Tall, column-like cells; found in the digestive tract; functions in absorption and secretion of mucus.

Stratified squamous epithelium

Multiple layers of cells; found in skin and mouth; functions in protection.

Pseudostratified columnar epithelium

Cells appear layered but are not; ciliated; found in respiratory tract; functions in secretion and movement of mucus.

Transitional epithelium

Cells that change shape; found in the bladder; functions in stretching.

Areolar connective tissue

Loose connective tissue; found under skin and around organs; functions in support and elasticity.

Reticular connective tissue

Network of reticular fibers; found in lymph nodes and spleen; functions in supporting organs.

Mesenchyme

Embryonic connective tissue; found in embryos; functions in the development of other tissues.

Adipose tissue

Fat tissue; found under skin and around organs; functions in energy storage and insulation.

Dense regular connective tissue

Parallel collagen fibers; found in tendons and ligaments; functions in strength.

Dense irregular connective tissue

Irregularly arranged fibers; found in dermis; functions in structural support.

Blood

Fluid connective tissue; found throughout the body; functions in transport of nutrients and oxygen.

Bone

Rigid connective tissue; found in skeleton; functions in support and protection.

Hyaline cartilage

Smooth, glass-like tissue; found in joints and respiratory tract; functions in cushioning.

Elastic cartilage

Contains elastic fibers; found in ear and epiglottis; functions in flexibility.

Fibrocartilage

Dense cartilage; found in intervertebral discs; functions in shock absorption.

Skeletal muscle

Striated muscle; found attached to bones; functions in voluntary movement.

Smooth muscle

Non-striated muscle; found in walls of hollow organs; functions in involuntary movements.

Cardiac muscle

Striated muscle; found in heart; functions in pumping blood.

Nervous tissue

Tissue of the nervous system; consists of neurons and glial cells; functions in signal transmission.

Neuron

Basic unit of nervous system; conducts nerve impulses.