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Example Questions
Example Question #1 : Understanding Properties Of Epithelium
Which of the following is NOT a property of epithelial tissue?
Tight junctions
Innervation
Basement membranes
Vasculature
Vasculature
An epithelia is a sheet of cells that are closely associated. Cells within an epithelium are polarized, indicating that the cells have a "direction". One side of the epithelium is called "apical" while the other side is "basal." The apical region is oriented toward a lumen, while the basal region is oriented toward a basement membrane associated with connective tissue. Cells within an epithelium are innervated, but not vascularized; therefore, they must receive signals through other methods of intercellular signaling, such as tight junctions.
Example Question #2 : Understanding Properties Of Epithelium
The epidermis is composed of which type of epithelium?
Simple squamous epithelium
Stratified squamous epithelium
Simple cuboidal epithelium
Stratified columnar epithelium
Stratified squamous epithelium
The epidermis is composed of five layers of flattened epithelial cells. This stratified squamous epithelium allows the skin to be a barrier for the body and prevent pathogens and foreign materials from entering.
Stratified epithelium has multiple layers, and squamous epithelium is flattened.
Example Question #3 : Understanding Properties Of Epithelium
Which of the following is not a function of the epithelium?
Production of germ cells
Protection
Absorption
Transmission of impulses
Secretion
Transmission of impulses
Nervous tissues such as the brain, spinal cord, and nerves function to transmit impulses for coordination, sensory reception, and motor actions. Epithelial tissue protects (skin), secretes (glands), absorbs (kidneys), and produces germ cells (embryo).
Example Question #3 : Understanding Properties Of Epithelium
Which of the of the following is not a property of epithelium?
Has distinct upper and lower surfaces
Supported by blood cells
Is almost entirely made up of cells
Is supported via connective tissue
Supported by blood cells
Epithelium describes the inner and outer surfaces of the body including; the skin, colons, and the stomach. These surfaces have distinct upper and lower sides, are kept in place by connective tissue, and are made up almost entirely of cells. However, they are not supported by blood cells.
Example Question #3 : Understanding Properties Of Epithelium
Which of the following is not a function of epithelial tissue?
Lining body cavities
Covering body surfaces
All of these are functions of epithelial tissue
Lining hollow organs
Secreting substances to other areas of the body via ducts
All of these are functions of epithelial tissue
The primary function of epithelial tissue is to provide linings that separate the body from the external environment. Epithelial tissue lines blood vessels, the respiratory and digestive tracts, the excretory system, and composes the skins. Epithelial tissue also lines the ducts that connect the body to the exterior, such as those that allow the pancreas to secrete enzymes into the small intestine.
Example Question #2 : Understanding Properties Of Epithelium
Which statement is true of epithelial tissue?
It lacks blood vessels
Fat cells are an example of epithelial tissue
The cells rarely divide
None of these
It consists of mostly extracellular material
It lacks blood vessels
Epithelial tissue is avascular (does not have a blood supply); thus epithelial tissue is always found in close association with connective tissue that has a rich blood supply. Epithelial cells cover organs and are thus subject to lots of friction. As a result they are continually being renewed, and divide quickly. In particular, skin cells and the epithelium lining the digestive tract have a high rate of division.
Example Question #4 : Understanding Properties Of Epithelium
Which of the following types of tissue is responsible for the storage of energy and insultation in the form of fat?
Adipose tissue
Nervous tissue
Striated tissue
Smooth tissue
Epithelial tissue
Adipose tissue
Adipose tissue is the anatomical term assigned to fatty tissue. Keep in mind that adipose tissue is a type of connective tissue. Adipose tissue serves as an energy store, helps maintenain of core body temperature, and protects internal organs from damage caused by trauma. Epithelial tissue is responsible for covering body cavities, and comprising glandular tissue. Nervous tissue is responsible for receiving sensory input from the environment, integration of the sensory input, control of muscles and glands, maintenance of body homeostasis, and emotions/personality. Smooth and striated are subsets of muscle tissue: skeletal and cardiac muscle are striated, whereas smooth muscle is not.