Which type of tissue covers body surfaces and lines body cavities?
What type of tissue binds structures together and provides structural support?
The three major components of connective tissue are...
Cells, ground substance, and protein fibers
What protein provides flexibility and strength to connective tissues?
What can be found at the ends of long bones, ribs, and respiratory passages?
Which of the following is not a function of the integument?
Production of white blood cells
What is responsible for the waterproofing of skin?
Choose the correct statement regarding accessory organs of the integument...
Nails, hair, and glands are all structures of epidermal origin.
Choose the most correct statement concerning capillaries.
The only site of nutrient, gas exchange, and waste exchange is the capillaries.
What is the function of valves in the veins?
Prevent the backward flow of blood.
Choose the correct statement concerning the heart. (ALL)
1. The heart is cone-shaped, 2. The heart is about the size of a human fist, 3. the heart is normally tilted toward the left, 4. The heart is between the lungs
The two lower pumping chambers of the heart are known as the...
______ pressure occurs when the ventricles are relaxing and ____ occurs when the heart ejects blood.
What serve as a reservoir for blood?
The heart muscle is known as the:
The venae cavae carry low-oxygen blood to the ____ of the heart.
The major functions of the blood include:
1. Transporting oxygen, hormones, and nutrients, 2. Carrying waste products, 3. Regulating body temps and pH, 4. Fighting pathogens
RBC's are better known as what?
WBC's are better known as what?
Which of the following are actually cell fragments and not whole cells?
Hemoglobin is ALL of the following:
1. Found in RBC's, 2. An oxygen transporter, 3. Required for cellular respiration, 4. The pigment that makes blood red
Mature human RBC's are...
Biconcave discs without a nucleus.
The two major components of blood are:
Formed elements and plasma
_____ are organisms such as viruses and bacteria that are capable of causing disease.
_____ exist in some bacteria and prevent them from being destroyed by phagocytic WBC's and certain one-celled organisms.
Under ideal conditions, some species of bacteria can double their numbers every 12 mins. This extraordinary ability is the result of bacteria being capable of:
The thymus becomes smaller with age as well as:
Helps T lymphocytes learn self from nonself
Identify the positive contributions of some bacteria (ALL)
1. Bacteria can serve as decomposers in the environment, 2. Bacteria are important in the wine, cheese, and bread industry, 3. Bacteria are important in biotechnology, 4. Some bacteria are beneficial residents of the digestive tract
An additional ring of DNA found in some bacteria is called a:
Choose the following statement that most accurately describes viruses. (ALL)
1. They contain a protein coat called a capsid, 2. They may contain genomic DNA or RNA, 3. They are acellular, 4. They are obligate intracellular parasites
Viruses are capable of multiplying in a host cell because:
Viral DNA instructs the cell to produce more of the virus
Prions cause degenerative diseases of which system?
New viral pathogens can emerge when... (ALL)
1. They are transported to different parts of the world, 2. The virus mutates, 3. The virus can be transmitted by a new vector, 4. The immune system cannot recognize a change in the virus
The lymphatic system... (ALL)
1. Takes up excess tissue fluid, returns it to the bloodstream, 2. Absorbs fats in the intestines, 3. Helps the body defend against disease, 4. Includes the spleen, thymus, and tonsils
Lymphatic capillaries called _____ are located in the small intestines.
What is not included as a lymphatic organ?
Red bone marrow and the ____ are considered primary lymphatic organs.
Lymph nodes and the _____ are considered secondary lymphatic organs.
Immunity is based on the recognition of antibody-stimulating entities known as...
ALL of the following are considered a nonspecific defense. (4)