1.
Epithelium
Correct Answer
C. Any tissue that covers the body or lines organs, glands, or pipes
Explanation
Epithelium refers to any tissue that covers the body or lines organs, glands, or pipes. This tissue is composed of cells that are taller than they are wide. The given options do not accurately describe epithelium. "Consisting of one cell layer" is not specific to epithelium as there are other tissues with a single layer of cells. "Striated" and "voluntary" are characteristics of muscle tissue, not epithelium. Therefore, the correct answer is any tissue that covers the body or lines organs, glands, or pipes.
2.
Desmosomes
Correct Answer
B. Along with gap junctions, form intercalated discs
Explanation
Desmosomes and gap junctions are both types of cell junctions that play important roles in cell communication and tissue integrity. Desmosomes are specialized structures that anchor cells together, providing mechanical strength and preventing cell separation. Gap junctions, on the other hand, allow for direct communication between adjacent cells by forming channels that allow the passage of small molecules and ions. In certain tissues, such as cardiac muscle, desmosomes and gap junctions work together to form intercalated discs, which facilitate coordinated contraction of the muscle cells. Therefore, the given answer correctly states that desmosomes, along with gap junctions, form intercalated discs.
3.
Simple
Correct Answer
C. Means consisting of one cell layer
Explanation
The term "means consisting of one cell layer" refers to simple epithelium. Simple epithelium is a type of tissue that is composed of a single layer of cells. This arrangement allows for efficient diffusion and absorption of substances across the epithelial lining. It is found in various parts of the body, including the lining of blood vessels and the intestines. The simplicity of this structure allows for easy exchange of nutrients and waste products between the cells and their surrounding environment. Additionally, the single layer of cells also enables rapid cell division and regeneration of the epithelium through the process of mitosis.
4.
Squamous
Correct Answer
flat scale like cells
Explanation
The term "squamous" refers to a type of epithelial cell that is flat and scale-like in shape. These cells are thin and often form layers, providing a protective barrier in various parts of the body, such as the skin and lining of certain organs. The correct answer simply describes the characteristic appearance of squamous cells as flat and scale-like.
5.
Stratified
Correct Answer
A. Describes tissue having many layers
Explanation
The term "stratified" is used to describe tissue that has multiple layers. This means that the cells in this type of tissue are arranged in layers on top of each other. The term does not refer to the shape or size of the cells, their location in the body, or their developmental origin. Therefore, the correct answer is "describes tissue having many layers."
6.
Columnar
Correct Answer
C. Cells taller than they are wide
Explanation
The term "columnar" refers to a shape or structure that is taller than it is wide. In the context of cells, columnar cells are elongated and have a height that exceeds their width. This shape allows for efficient absorption and secretion, as well as providing structural support in certain tissues. Therefore, the correct answer is "cells taller than they are wide."
7.
Endothelium
Correct Answer
D. Epithelium of blood vessel lining
Explanation
The correct answer is "Epithelium of blood vessel lining." The term "endothelium" refers to the specialized epithelial cells that line the interior surface of blood vessels. These cells play a crucial role in maintaining the integrity and function of the blood vessels. They form a barrier between the blood and the surrounding tissues, regulate the transport of substances in and out of the blood vessels, and contribute to the control of blood pressure and clotting. Therefore, the correct answer is the specific type of epithelium that lines the blood vessels.
8.
Matrix
Correct Answer
B. The extracellular collection of water, collagen fibers, GAGs, HA, et al.
Explanation
The correct answer is the extracellular collection of water, collagen fibers, GAGs, HA, et al. The matrix refers to the non-living components of a tissue or organ that provide structural support and facilitate cell function. In this context, the matrix of the tissue is described as containing water, collagen fibers, GAGs (glycosaminoglycans), HA (hyaluronic acid), and other substances. These components contribute to the tissue's strength, flexibility, and ability to retain water.
9.
Adipose
Correct Answer
B. Fat storage tissue
Explanation
The term "adipose" refers to fat tissue in the body. Adipose tissue is specialized for the storage of fat, which serves as an energy reserve and insulation. It is made up of adipocytes, which are cells that store fat in the form of triglycerides. These cells are responsible for the synthesis, storage, and release of fat molecules. Therefore, the correct answer, "fat storage tissue," accurately describes the function of adipose tissue in the body.
10.
Reticular
Correct Answer
C. Filtering tissue in lympH nodes
Explanation
The term "filtering tissue in lymph nodes" refers to the function of reticular tissue in lymph nodes. Reticular tissue is a type of connective tissue that contains reticular fibers and reticular cells. In lymph nodes, reticular tissue forms a network that helps filter and trap foreign particles, pathogens, and damaged cells from the lymph fluid. This filtering process is essential for the immune system's function in identifying and eliminating harmful substances from the body.
11.
Cilia
Correct Answer
A. Hair-like extension that "do the wave"
Explanation
Cilia are hair-like extensions that "do the wave." This means that cilia have a coordinated movement in which they beat in a rhythmic pattern, similar to the way waves move. This movement helps cilia perform their function, which is to move substances along the surface of cells or propel cells through fluid. Cilia can be found in various parts of the body, such as the respiratory tract, where they help to move mucus and trapped particles out of the lungs. Therefore, the answer accurately describes the characteristic movement of cilia.
12.
Microvilli
Correct Answer
A. Increase the surface of intestinal lining
Explanation
Microvilli are tiny, finger-like projections found on the surface of cells in the small intestine. They greatly increase the surface area of the intestinal lining, allowing for more efficient absorption of nutrients from digested food. This increased surface area is essential for the proper functioning of the digestive system. Therefore, the correct answer is "increase the surface of intestinal lining".
13.
Goblet cells
Correct Answer
C. Mucus secreting cells
Explanation
The correct answer is mucus secreting cells. Goblet cells are specialized cells found in the respiratory and digestive tracts that secrete mucus. Mucus plays a vital role in protecting and lubricating the epithelial surfaces. Therefore, the statement "mucus secreting cells" accurately describes goblet cells.
14.
Messenchyme
Correct Answer
A. Embryonic tissue; becomes all the blasts
Explanation
Messenchyme is an embryonic tissue that has the ability to differentiate into various cell types, known as blasts. These blasts then further develop into different tissues and organs in the body. This process is crucial for the formation and growth of an organism during embryonic development.
15.
Basement membrane
Correct Answer
A. Foundation layer producing new epithelium by mitosis
Explanation
The correct answer is "Basement membrane." The basement membrane is a thin, specialized extracellular matrix that serves as a foundation layer for epithelial cells. It provides structural support and helps regulate the exchange of substances between the epithelium and underlying tissues. Additionally, the basement membrane plays a crucial role in tissue regeneration by producing new epithelium through cell division (mitosis). This process allows for the continuous renewal and repair of epithelial tissues.
16.
Transitional
Correct Answer
A. Cubodial when the bladder is empty; squamous when the bladder is full
Explanation
The correct answer is based on the description of transitional epithelium. Transitional epithelium is a type of tissue that lines the urinary bladder and ureters. It is characterized by its ability to stretch and change shape. When the bladder is empty, the cells of the transitional epithelium appear cuboidal, which means they are shaped like cubes. When the bladder is full, the cells flatten out and appear squamous, which means they are flat and thin. This change in cell shape allows the bladder to expand and accommodate urine.
17.
Skeleton muscle
Correct Answer
B. Striated ("striped"); voluntary
Explanation
The correct answer is "striated ("striped"); voluntary". This is because skeletal muscles have a striped appearance due to the arrangement of contractile units called sarcomeres. These muscles are under voluntary control, meaning they can be consciously controlled by the individual.
18.
Cardiac muscle
Correct Answer
C. Striated; involuntary; intercalated discs
Explanation
Cardiac muscle is characterized by being striated, meaning it has a striped appearance under a microscope. It is also involuntary, meaning it is not under conscious control. Additionally, cardiac muscle cells are connected by specialized junctions called intercalated discs, which allow for synchronized contractions of the heart. This combination of striations, involuntary control, and intercalated discs distinguishes cardiac muscle from other types of muscle tissue.
19.
Smooth muscle
Correct Answer
C. Involuntary; in the walls of the digestive organs
Explanation
Smooth muscle is a type of muscle tissue that is involuntary, meaning it is not under conscious control. It is found in the walls of various organs, including the digestive organs. This type of muscle does not have striations, which are the alternating light and dark bands seen in striated muscle. Therefore, the correct answer is "involuntary; in the walls of the digestive organs."