High School Biology : Epithelium and Endothelium
Study concepts, example questions & explanations for High School Biology
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Example Questions
Example Question #11 : Epithelium And Endothelium
Which of the following is not a function of epithelial tissue?
Covering body surfaces
Lining body cavities
Secreting substances to other areas of the body via ducts
All of these are functions of epithelial tissue
Lining hollow organs
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 #12 : Epithelium And Endothelium
Which statement is true of epithelial tissue?
It lacks blood vessels
Fat cells are an example of epithelial tissue
It consists of mostly extracellular material
None of these
The cells rarely divide
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 #7 : 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?
Smooth tissue
Adipose tissue
Epithelial tissue
Striated tissue
Nervous 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.
Example Question #233 : Tissues, Organs, And Organ Systems
These cells are metabolically active and produce a number of compounds that affect the the vascular lumen and platelets. They line the blood and lymph vessels.
What cell type is being described?
Stem
Adipose
Dendritic
Cone
Endothelium
Endothelium
The endothelium is a form of squamous epithelium consisting of flat cells that line the blood and lymphatic vessels. Endothelial cells are metabolically active and produce compounds that relax vascular smooth muscle and inhibit the adhesion of platelets.
Adipose, or fat cells, are modified for long-term energy storage and are considered connective tissue. Cone cells are found in the eye and serve as light receptors for the nervous system. Stem cells can develop into more specifically differentiated daughter cells. Dendritic cells help T-cells respond to foreign antigens as part of the immune system.
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