The Four Fundamental Tissue Types

Muscle Tissue

• Movement of skeleton

• Beating of heart

• Movement of food through digestive system

Skeletal Muscle (Muscle)

is attached to bones and is responsible for voluntary movements such as walking, writing, and posture maintenance

Cardiac Muscle (Muscle)

is found exclusively in the heart and contracts rhythmically to pump blood throughout the body

Smooth muscle (Muscle)

is found in the walls of hollow organs, such as the stomach, intestines, blood vessels, and uterus. Its contractions move substances through internal passageways and regular diameter and flow

Connective Tissue

• Most abundant and diverse tissue type

• Primary functions include support, protection, binding, transport, and storage

• Characterized by cells embedded in an extracellular matrix composed of fibers and ground substance

Bone (Connective)

Provides rigid support and protection while also storing minerals and housing blood-forming cells

Cartilage (Connective)

provides flexible support and reduces friction at joints

Blood (Connective)

a specialized connective tissue that transports gases, nutrients, hormones, and waste products

Loose and dense connective tissues (Connective)

bind organs together and provide structural integrity

Nervous Tissue

• Specialized for rapid communication and control

• Consists of neurons transmitting electrical signals and supporting cells called neuroglia

• Allows the body to detect changes in the internal and external environment

Which organs are the Nervous tissue found in?

Brain, spinal cord, and peripheral nerves

What happens through electrical impulses and chemical signaling?

Nervous tissue coordinates movement, sensation, cognition, and homeostatic regulation

Epitheial Tissue

• Forms protective covering and linings throughout the body

• Found on body surfaces, lining internal cavities and organs, and forming glands

How is Epithelial tissue formed?

Tightly packed, has little extracellular material, and is specialized for functions such as protection, absorption, filtration, and secretion.

Example of Epithelial Tissue

• Epidermis of the skin - protects against injury and infection

• Lining of the Digestive Tract - absorbs nutrients

• Glandular Epithelium - produces hormones and enzymes