Epithelial Tissue Quiz

Covers body surfaces (epidermis), lines cavities (mucosae, intestine), and forms glands (pancreas, liver).

Supports other tissues like epithelia, muscle, and nerves. Includes specialized tissues like cartilage, bones, blood, and lymphoid organs.

Made up of contractile cells responsible for movement.

Receives, integrates, and transmits information, controlling all bodily functions.

One of the three primary germ layers that develop during embryonic development. It gives rise to the epidermis, cornea, lens, and other structures.

One of the three primary germ layers that develop during embryonic development. It gives rise to the lining of the respiratory and gastrointestinal tracts, liver, and pancreas.

One of the three primary germ layers that develop during embryonic development. It gives rise to the kidneys, urinary and reproductive tracts, and certain types of epithelium.

Cells tightly apposed forming sheets (epidermis, mucosae). Functions include protection, metabolic exchanges, and sensory reception.

A type of epithelial tissue that appears layered due to the arrangement of nuclei at different heights, but all cells connect to the basement membrane.

A type of epithelial tissue composed of multiple layers of cells, with the outermost layer being dead and filled with keratin.

The base layer of stratified epithelial tissue, responsible for the continuous renewal of cells.

Epithelial cells receive nutrients from the underlying connective tissue because they lack their own blood vessels.

A type of epithelial tissue that helps in absorption and secretion of nutrients.

A single layer of flat, thin cells, often found in areas where diffusion or filtration needs to occur.

A single layer of cube-shaped cells, involved in secretion and absorption.

A single layer of tall, column-shaped cells, responsible for secretion, absorption, and movement of substances.

Multiple layers of cells, providing protection. The outermost layer may be keratinized for increased durability.

The outermost layer of cells in stratified squamous epithelium. These cells are dead and filled with keratin, providing a tough, protective barrier.

The outermost layer of cells in stratified squamous epithelium that is not filled with keratin. Found in areas like the lining of the mouth.

A specialized type of stratified epithelium found in the urinary bladder. It can stretch and change shape depending on the bladder's fullness.

Stratified squamous keratinised epithelial tissue is found in areas where protection from the environment is crucial, such as the outer layer of the skin and the lining of the mouth.

The outermost layer of stratified squamous keratinised epithelial tissue is composed of dead cells filled with the protein keratin. These cells form a protective barrier.

Stratified cuboidal epithelial tissue forms the lining of large glands, including the sweat glands, sebaceous glands, and the exocrine pancreas.

Stratified columnar epithelial tissue lines certain areas like the larynx mucosa, male urethra, and conjunctiva.

Transitional epithelium is found in the urinary tract, from the renal pelvis to the bladder and urethra. This tissue can stretch and adapt depending on the organ's state, hence the ‘transitional’ name.

The cells of transitional epithelium can change shape depending on the organ's filling status. When full, the epithelium is shorter and more compact; when empty, it's taller and more layered.

The epidermis is made up of stratified squamous keratinised epithelium and is responsible for protecting the body from external factors.

The epidermis consists of multiple layers, each with a distinct function. Basal layer is for cell renewal, spinous layer for cell growth, stratum granulosum for keratinization, stratum lucidum for thick skin protection, and stratum corneum for the outermost protective layer.

Desmosomes are anchoring junctions in epithelial cells that hold cells together. They function like rivets, giving strength and resistance to mechanical stress.

Desquamation is the shedding of dead skin cells from the epidermis. It occurs when desmosomes break, releasing cells.

Epidermolysis bullosa simplex (EBS) is a genetic disorder caused by mutations in keratin. It leads to fragile skin that blisters in response to mechanical stress, because desmosomes are weakened.

Pemphigus foliaceus is an autoimmune disease where the body's immune system attacks desmoglein 1, a major component of desmosomes. This leads to loss of cell-to-cell adhesion and blistering.

Melanocytes are specialized cells in the epidermis that produce and distribute melanin, the pigment responsible for skin color and protecting the skin from UV damage.

Melanosomes are organelles within melanocytes where melanin is stored and transported. They are responsible for skin color and protecting the skin from UV damage.

Langerhans cells are immune cells in the epidermis that act as sentinels, detecting and responding to pathogens. They engulf and process invaders, initiating an immune response.

Merkel cells are specialized sensory cells in the epidermis that are connected to nerve fibers. They are responsible for light touch sensations and the discrimination of shapes and textures.