4A0 CDC Volume 1 (URE & STQ)-
Questions & Answers
Where does the exchange of carbon dioxide and oxygen occur? Correct Ans-In the alveoli
What system moves blood throughout the body? Correct Ans-Circulatory
What does blood transport? Correct Ans-Food and oxygen to the cells; carries away carbon
dioxide and other wastes
Of what does the circulatory system consist? Correct Ans-Heart, blood vessels, blood, and the
lymphatic system
How does the heart pump blood through the circulatory system? Correct Ans-Contracting and
relaxing rhythmically
How many pumps does the heart have? Correct Ans-Two, one to carry that receives blood
from the lungs to the cells and another that picks up carbon dioxide and other wastes from the
cells
What are the three types of blood vessels? Correct Ans-Arteries, veins, and capillaries
What is the largest artery in the body? Correct Ans-Aorta
,What are the body's two largest veins? Correct Ans-Superior vena cava and inferior vena cava
The blood consists of plasma and what three kinds of formed elements? Correct Ans-Red
blood cells (erythrocytes), white blood cells (leukocytes), and platelets
How are red blood cells (erythrocytes) able to carry oxygen from the lungs to the body tissues?
Correct Ans-They contain hemoglobin, which picks up oxygen molecules from the lungs
How do white blood cells (leukocytes) help protect the body from disease? Correct Ans-By
attacking bacteria, viruses, poisons, and other harmful substances
How do platelets help prevent bleeding from damaged blood vessels? Correct Ans-They
collect where an injured blood vessel leaks and along with various proteins in the plasma, seal
broken blood vessels by forming a clot
Where does lymph come from? Correct Ans-Blood
What is the purpose of lymph nodes? Correct Ans-Produce many white blood cells, which
filter harmful substances out of the lymph
What are the main organs of the urinary system? Correct Ans-Kidneys
,What are the microscopic filtering units in the kidneys called? Correct Ans-Nephrons
What is formed when water, urea, sodium chloride, and certain other wastes are filtered through
a nephron? Correct Ans-Urine
What carries urine from the kidneys to the urinary bladder? Correct Ans-Ureters
Where does urine leave the body? Correct Ans-Urethra
What is the process in which a sperm unites with an egg? Correct Ans-Fertilization
In the male, what glands produce sperm? Correct Ans-Testicles
How often do the ovaries of a female release an egg? Correct Ans-About once a month during
childbearing years
How does the developing baby obtain food and oxygen? Correct Ans-The placenta enables
the baby to obtain food and oxygen from the mother's bloodstream
How do the endocrine glands control body function? Correct Ans-By producing hormones
What are some of the main endocrine glands? Correct Ans-Adrenal, pituitary, parathyroid,
sex, and the thyroid glands
, Why is the pituitary gland called the master gland? Correct Ans-It releases a number of
hormones, which regulate other endocrine glands
How is the pituitary gland controlled? Correct Ans-By hormones released by a part of the
brain called the hypothalamus
Define exocrine glands Correct Ans-They make chemicals that perform specific functions in
the area where they are released
What are some of the major exocrine products? Correct Ans-Digestive juices, mucus, sweat,
and tears
What does the nervous system regulate and coordinate? Correct Ans-The activities of all
other systems of the body.
Of what is the nervous system made? Correct Ans-Neurons
What are the three main divisions of the nervous system? Correct Ans-Central, peripheral,
and autonomic nervous systems
What division of the nervous system functions as the control center? Correct Ans-Central
nervous system
Questions & Answers
Where does the exchange of carbon dioxide and oxygen occur? Correct Ans-In the alveoli
What system moves blood throughout the body? Correct Ans-Circulatory
What does blood transport? Correct Ans-Food and oxygen to the cells; carries away carbon
dioxide and other wastes
Of what does the circulatory system consist? Correct Ans-Heart, blood vessels, blood, and the
lymphatic system
How does the heart pump blood through the circulatory system? Correct Ans-Contracting and
relaxing rhythmically
How many pumps does the heart have? Correct Ans-Two, one to carry that receives blood
from the lungs to the cells and another that picks up carbon dioxide and other wastes from the
cells
What are the three types of blood vessels? Correct Ans-Arteries, veins, and capillaries
What is the largest artery in the body? Correct Ans-Aorta
,What are the body's two largest veins? Correct Ans-Superior vena cava and inferior vena cava
The blood consists of plasma and what three kinds of formed elements? Correct Ans-Red
blood cells (erythrocytes), white blood cells (leukocytes), and platelets
How are red blood cells (erythrocytes) able to carry oxygen from the lungs to the body tissues?
Correct Ans-They contain hemoglobin, which picks up oxygen molecules from the lungs
How do white blood cells (leukocytes) help protect the body from disease? Correct Ans-By
attacking bacteria, viruses, poisons, and other harmful substances
How do platelets help prevent bleeding from damaged blood vessels? Correct Ans-They
collect where an injured blood vessel leaks and along with various proteins in the plasma, seal
broken blood vessels by forming a clot
Where does lymph come from? Correct Ans-Blood
What is the purpose of lymph nodes? Correct Ans-Produce many white blood cells, which
filter harmful substances out of the lymph
What are the main organs of the urinary system? Correct Ans-Kidneys
,What are the microscopic filtering units in the kidneys called? Correct Ans-Nephrons
What is formed when water, urea, sodium chloride, and certain other wastes are filtered through
a nephron? Correct Ans-Urine
What carries urine from the kidneys to the urinary bladder? Correct Ans-Ureters
Where does urine leave the body? Correct Ans-Urethra
What is the process in which a sperm unites with an egg? Correct Ans-Fertilization
In the male, what glands produce sperm? Correct Ans-Testicles
How often do the ovaries of a female release an egg? Correct Ans-About once a month during
childbearing years
How does the developing baby obtain food and oxygen? Correct Ans-The placenta enables
the baby to obtain food and oxygen from the mother's bloodstream
How do the endocrine glands control body function? Correct Ans-By producing hormones
What are some of the main endocrine glands? Correct Ans-Adrenal, pituitary, parathyroid,
sex, and the thyroid glands
, Why is the pituitary gland called the master gland? Correct Ans-It releases a number of
hormones, which regulate other endocrine glands
How is the pituitary gland controlled? Correct Ans-By hormones released by a part of the
brain called the hypothalamus
Define exocrine glands Correct Ans-They make chemicals that perform specific functions in
the area where they are released
What are some of the major exocrine products? Correct Ans-Digestive juices, mucus, sweat,
and tears
What does the nervous system regulate and coordinate? Correct Ans-The activities of all
other systems of the body.
Of what is the nervous system made? Correct Ans-Neurons
What are the three main divisions of the nervous system? Correct Ans-Central, peripheral,
and autonomic nervous systems
What division of the nervous system functions as the control center? Correct Ans-Central
nervous system
