1.
How many types of epithelium are there?
Correct Answer
D. 5
Explanation
There are five types of epithelium. Epithelium is a tissue that covers the surfaces of organs, lines body cavities, and forms glands. The five types of epithelium are squamous, cuboidal, columnar, transitional, and ciliated. Each type has distinct characteristics and functions. Squamous epithelium is flat and thin, cuboidal epithelium is cube-shaped, columnar epithelium is tall and rectangular, transitional epithelium can stretch and contract, and ciliated epithelium has hair-like projections called cilia.
2.
What are the types of tissues in question 1?
Correct Answer
epithelial tissue
nervous tissue
muscle
connective tissue
Explanation
The types of tissues mentioned in the question are epithelial tissue, nervous tissue, muscle, and connective tissue. These are the four main types of tissues found in the human body. Epithelial tissue covers the surfaces of organs and lines body cavities. Nervous tissue is responsible for transmitting signals throughout the body. Muscle tissue enables movement and contraction. Connective tissue provides support and structure to the body.
3.
A group of organized __________ working together forms __________. An organized group of the latter work together to form __________.
Correct Answer
C. Cells; tissue; organs
Explanation
Cells are the basic building blocks of living organisms. When cells with similar functions come together, they form tissues. Tissues, in turn, work together to form organs. Therefore, the correct order is cells, tissue, and organs.
4.
Which of the following tissue types make up the inside or outside lining or something?
Correct Answer
A. Epithelial
Explanation
Epithelial tissue is the correct answer because it forms the lining of both the inside and outside surfaces of various organs and structures in the body. This tissue type is responsible for protecting underlying tissues, absorbing nutrients, and secreting substances. It is found in the skin, respiratory tract, digestive tract, and many other organs. Connective tissue provides support and connects different structures, while muscular tissue is responsible for movement and contraction. Therefore, epithelial tissue is the most appropriate answer for the given question.
5.
If you observe a layer of columnar cells of varying heights, they would be called __________ columnar cells.
Correct Answer
C. Pseudostratified
Explanation
If a layer of columnar cells of varying heights is observed, they would be called pseudostratified columnar cells. This term is used to describe a type of epithelial tissue where the cells appear to be layered or stratified, but in reality, all cells are attached to the basement membrane. The varying heights of the cells give the appearance of layers, hence the term "pseudostratified".
6.
An epithelial membrane consists of __________ tissue.
Correct Answer
B. Epithelial and connective
Explanation
An epithelial membrane consists of epithelial and connective tissue. Epithelial tissue forms the outer layer of the membrane, providing protection and serving as a barrier. Connective tissue lies beneath the epithelial layer and supports and nourishes the epithelial cells. Together, these two types of tissue work in tandem to form the epithelial membrane.
7.
The epithelial membrane that surrounds the heart and lungs separately is called a __________ membrane.
Correct Answer
B. Serous
Explanation
The correct answer is serous. The serous membrane is a type of epithelial membrane that surrounds and protects the heart and lungs separately. It consists of two layers, the parietal layer which lines the body cavity, and the visceral layer which covers the organs. The serous membrane secretes a fluid that reduces friction between the layers, allowing smooth movement of the organs.
8.
The epithelial membrane that lines the body cavities that are exposed to the outside of the body is called a __________ membrane.
Correct Answer
A. Mucous
Explanation
The correct answer is mucous. The mucous membrane lines the body cavities that are exposed to the outside of the body, such as the respiratory, digestive, and reproductive tracts. It secretes mucus, which helps to protect and lubricate these cavities, trapping foreign particles and preventing them from entering the body. The other options, serous and synovial membranes, line different types of body cavities and serve different functions.