Tissue type, cells, cellular structures, functions, and locations

What is the function of simple squamous epithelium?

Provides a thin barrier for exchange of substances

Where is simple squamous epithelium located?

Alveoli of the lungs, glomeruli of the kidney, inner lining of blood vessels, heart chambers, and capillaries.

what does simple cuboidal epithelium contain?

A single layer of cells as tall as they are wide (cuboidal); may have cilia or microvilli.

What are the functions of simple cuboidal epithelium?

Secretion and absorption; cilia move fluid across a surface; microvilli increase surface area for absorption.

Where is simple cuboidal epithelium located?

Small tubules of the kidney and ducts of some glands.

What is simple columnar epithelium?

A single layer of cells that are taller than they are wide (columnar); may have cilia or microvilli and may contain goblet cells.

What are the functions of simple columnar epithelium?

Secretion and absorption; cilia move substances across the surface; microvilli increase surface area for absorption; goblet cells secrete mucus.

Where is simple columnar epithelium located?

Inner lining of the stomach, small intestine, large intestine, and uterine tubes.

What is pseudostratified columnar epithelium?

A single layer of cells with staggered nuclei that gives the appearance of being stratified; may have cilia and goblet cells.

What are the functions of pseudostratified columnar epithelium?

Secretion and absorption; cilia move substances across the surface; goblet cells secrete mucus.

Where is pseudostratified columnar epithelium located?

Respiratory tract, including the nasal cavity, larynx, and trachea.

What is stratified squamous epithelium?

Multiple layers of cells with the apical (surface) layer made of flat (squamous) cells.

What are the functions of stratified squamous epithelium?

Provides physical protection and resists abrasion.

Where is stratified squamous epithelium located?

Skin, vagina, esophagus, and mouth.

What is (Loose) Areolar connective tissue?

It has widely spaced cells and fibers in a gel-like matrix. Fibroblasts are the cells that make the fibers. It has collagen and elastic fibers in a fibrous matrix.

What does (Loose) Areolar connective tissue do?

It loosely connects tissues and organs. It provides strength and elasticity. Collagen fibers give strength, while elastic fibers give elasticity.

Where is (Loose) Areolar connective tissue found?

Between muscle and skin

What is Reticular connective tissue?

It is a loose network of cells and branching reticular fibers. Fibroblasts are the cells that make the fibers, and it has a fibrous matrix.

What does Reticular connective tissue do?

It creates a framework that supports soft organs, especially lymphatic organs. Reticular fibers branch out to form this framework.

Where is Reticular connective tissue found?

Liver, spleen, tonsils, appendix, lymph nodes, and bone marrow.

What is Adipose tissue?

It is made of large cells filled with fat (triglycerides). The cells are called adipocytes and they are surrounded by a fibrous matrix.

What does Adipose tissue do?

It stores energy for a long time, protects the body, and provides insulation.

Where is Adipose tissue found?

Deep to the skin and around internal organs.

What is Dense Regular Connective Tissue?

It has collagen fibers packed closely together and running parallel to each other. Fibroblasts are the cells that make the fibers, and it has a fibrous matrix.

What does Dense Regular Connective Tissue do?

It resists stretching, usually in one direction. Collagen fibers make strong connections between parts of the muscular and skeletal systems.

Where is Dense Regular Connective Tissue found?

Tendons (muscle to bone), ligaments (bone to bone), and aponeuroses (muscle to muscle).

What is Dense Irregular Connective Tissue?

It has collagen fibers packed closely together, but the fibers do not run parallel. Fibroblasts make the fibers, and it has a fibrous matrix.

What does Dense Irregular Connective Tissue do?

It resists stretching in many different directions. The collagen fibers give the tissue strength.

Where is Dense Irregular Connective Tissue found?

In the skin, specifically the dermis (deep layer of the skin).

What is Blood tissue?

It has cells that are widely spaced in a liquid matrix called plasma. The cells include erythrocytes, leukocytes, and platelets.

What does Blood tissue do?

Erythrocytes transport oxygen, leukocytes fight infection, and platelets help with blood clotting.

Where is Blood tissue found?

In the cardiovascular system.

What is cartilage tissue?

It has widely spaced cells in a uniform gel-like matrix. The cells are called chondrocytes. Chondrocytes are found in spaces called lacunae. Cartilage is avascular, meaning it has no blood supply.

What does cartilage tissue do?

It provides structures with some flexibility, provides cushioning, and reduces friction between joints.

Where is cartilage tissue found?

Articular cartilage, nasal cartilage, ear, epiglottis, intervertebral discs, and pubic symphysis.

What is compact bone tissue?

It has a special organization of cells and a solid matrix. An osteon is the cylindrical structural unit of compact bone.

What does compact bone tissue do?

It provides support and protection for the body and stores calcium and phosphorus.

Where is compact bone tissue found?

The skeletal system.

What is skeletal muscle tissue?

It has long, multinucleated cell fibers. The cells are called muscle fibers (myocytes). The fibers have striations (light and dark bands).

What is the function of skeletal muscle tissue?

Voluntary contraction, meaning you can control its movement.

Where is skeletal muscle tissue located?

Muscle attached to bone and skin.

What is cardiac muscle tissue?

It has short, branched cells with a single, centrally located nucleus. The cells are called cardiomyocytes. They have striations (light and dark bands) and intercalated discs connect the cells to each other.

What is the function of cardiac muscle tissue?

Involuntary rhythmic contractions, meaning it contracts without you having to control it.

Where is cardiac muscle tissue located?

Only in the myocardium of the heart wall.

What is smooth muscle tissue?

It has many short cells with tapered ends (spindle-shaped). The cells are called myocytes. They have one centrally located nucleus and no striations.

What is the function of smooth muscle tissue?

Involuntary contractions.

Where is smooth muscle tissue located?

Walls of blood vessels, uterus, and digestive organs such as the stomach and small and large intestines.What is neural tissue?

What is neural tissue?

It is made of neurons and smaller cells called neuroglia (glial cells) that surround the neurons.

What is the function of neural tissue?

It is used for communication and coordinating bodily functions. Neurons send signals, while neuroglia provide protection and support.

Where is neural tissue located?

Central nervous system (brain and spinal cord) and peripheral nervous system (cranial and spinal nerves).