WorksheetsHuman Body Review
Total questions: 30
Worksheet time: 23mins
The rate at which blood flows through the human body changes in response to many factors. Which statement describes one of these factors and its effect on blood flow?
A high viscosity of blood causes an increased resistance in the blood vessels and leads to decreased blood flow
The changing of the shape of red blood cells to a crescent shape decreases resistance and lead to increased blood flow.
The narrowing of blood vessels increases pressure and leads to increased blood flow.
A low blood pH decreases the rate of diffusion through the blood vessels and leads to decreased blood flow.
A patient presents with sickle cell anemia which causes blood cells to become crescent moon shaped and easily clump together and form clots. How would sickle cell anemia affect blood flow?
Decrease blood flow
Increase blood flow
It really has no effect
Sometimes it increases flow and sometimes decreases flow
Which of the following factors would most directly affect blood flow through the circulatory system?
blood sugar
blood pressure
respiratory rate
outside temperature
Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise?
A
B
C
D
Which of the following statements is correct?
Blood pressure is measured in the capillaries.
The veins have the highest blood pressure.
The walls of the arteries are thin to allow the oxygen rich blood to enter the body tissues.
Veins have a series of valves to assist blood to return to the heart.
Which letter is pointing to the parietal lobe of the cerebrum?
A
B
C
D
What is a function of the brain stem?
interpret vision
store memories
balance
breathing
Which letter is pointing to the cerebellum?
A
D
E
F
Although vaccines cannot be used to treat a person who is sick, they can help to prevent infections. Vaccinations tell the body to create "memory cells", which will function later to create antibodies against certain pathogens. When a person is vaccinated, what are they injected with?
weakened viruses or antigens from the virus
live, inactive viruses
antibodies to a disease bacterium
blood from a person who has had the disease
Many species of bacteria have become resistant to antibiotics because antibiotics have been so widely used. Now, bacteria that at one time were killed by antibiotics are more difficult to treat. What is the best way to proceed in dealing with this public health problem?
Anti-viral medications should now be used instead of antibiotics.
Antibiotics should only be prescribed to people with bacterial infections.
Antibiotics should be made available to anyone without a prescription.
Antibiotics should no longer be used.
During infection, these antibody-producing cells become activated in the lymph nodes to neutralize blood-borne pathogens
Macrophage
Neutrophils
B Cells
Killer T Cells
A person with an injury to her frontal lobe may have difficulty with...
sleeping
reasoning & making decisions
seeing
hearing
Which of the following sequences correctly describes prenatal development?
blastocyst implants in uterus, zygote forms, heart begins beating, lungs can breathe air, sex organs become visible
zygote forms, blastocyst implants in the uterus, sex organs become visible, heart begins beating, lungs can breathe air
blastocyst implants in the uterus, zygote forms, heart begins beating, sex organs become visible, lungs can breathe air
zygote forms, blastocyst implants in the uterus, heart begins beating, sex organs become visible, lungs can breathe air
What is letter D pointing to?
testes
scrotum
vas deferens
epididymus
How is the skin the body’s first line of defense?
It secretes sweat, which raises the pH of the skin and kills pathogens.
It forms a physical barrier to keep pathogens out.
It traps pathogens in the many flagella that line mucous membranes.
It secretes oil, which washes away pathogens.
Which of the following statements about reproductive hormones is TRUE?
Men and women produce both estrogen and testosterone.
Only women produce progesterone.
Reproductive hormones affect only the reproductive system.
Estrogen levels are highest during early pregnancy
The diagram shows human female reproductive structures. Which structure is correctly paired with its function?
A - releases estrogen and progesterone
B - produces and releases the egg
C - provides the usual site for fertilization
D - nourishes a developing embryo
The drinking of alcoholic beverages by a pregnant woman is harmful to the development of her fetus. This is most damaging early in a pregnancy because during this time
the lungs of the fetus become functional.
alcohol can easily enter the mouth of the fetus.
many of the essential organs of the fetus are forming.
the fetus cannot excrete wastes.
Which of the following describes fertilization?
cell differentiation to form a blastula
formation of germ layers in a deuterostome
a sperm joining an egg to form a zygote
sperm and egg production
Antibodies help to fight infection by
binding to antigens and marking pathogens for destruction by macrophage
increasing activity of killer T cells
actively preforating pathogens through the action of Perforin protein
causing a systemic fever to slow the growth of pathogens
You are able to read this because the information received from your eyes is processed in the part of the brain represented by which number?
A
C
D
F
To replace burned skin, doctors can successfully transplant replacement skin taken from another part of the body of the burn victim. Which of the following statements best explains why the transplanted skin is not rejected?
There is no blood supply to the skin, so mixing of antigens does not occur
The transplanted skin is damaged, making the immune system nonfunctional.
Burn victims lose so much blood that white blood cells cannot cause an immune response.
The antigens of the replacement skin are the same as those of the damaged skin.
Which of the following sequences correctly describes prenatal development?
blastocyst implants in uterus, zygote forms, heart begins beating, lungs can breathe air, sex organs become visible
zygote forms, blastocyst implants in the uterus, sex organs become visible, heart begins beating, lungs can breathe air
blastocyst implants in the uterus, zygote forms, heart begins beating, sex organs become visible, lungs can breathe air
zygote forms, blastocyst implants in the uterus, heart begins beating, sex organs become visible, lungs can breathe air
Which event can result in the birth of identical twins?
penetration of one egg by two sperm
fertilized egg splits into two zygotes
penetration of two eggs by two sperm
attachment of two eggs to the uterus
A/an ________ is a protein or carbohydrate chain which serves as a marker and helps the immune system to identify cells as self or foreign
complement
antibody
antigen
interferon
Which event occurs during the second trimester of pregnancy?
brain grows rapidly
fingers begin to form
heart starts beating
lungs complete development
Once sperm are produced by the testes they move into and mature in the
Epididymis
Vas deferens
Penis
Seminiferous tubes
The greater the blood vessels are dilated, the ________ .
higher the blood flow
faster the heartbeat
slower the heartbeat
lower the blood flow
A woman is complaining of abdominal pain. It is determined she has polycystic ovaries and must have them removed. What is the most direct effect of their removal?
Increased testosterone production
Increased menstruation
Increased progesterone production
Decreased estrogen production
White blood cells are an important part of the human immune response. Two types of white blood cells, neutrophils and macrophages, act as phagocytes. Phagocytes perform which of the following functions in the human body?
They form a barrier against pathogens.
They produce antibodies.
They engulf and destroy bacteria.
They bind to antigens and develop into plasma cells.
