Unit Test Answers

Which of the following describes the epididymis?

In the 1950s, the structure of DNA was discovered by using models and x-ray chromatography. Currently, science has used advanced technology to completely map out the genes in a human’s body. What would be the best advantage of using this information?

Charles is an engineer who is evaluating a prototype of an artificial heart. The prototype beats in a synchronized fashion, is hollow, and has tubes attached to it. It can be powered by electrical signals from the brain when it is interfaced with the appropriate nerves. What important feature should Charles notice the prototype is missing?

During a third-trimester ultrasound, what would a doctor expect to observe in a fetus?

Which terms best complete the chart about characteristics of human development between fertilization and birth?Stages of Human GestationFirst trimesterSecond trimesterThird trimester- Embryo develops- Organs begin to develop- (1)- Starts swallowing- Fat begins to develop- (2)- All organs are developed- Can hear and see- (3)

Which best describes the role of immunosuppressants in transplant surgeries?

The graph shows the changing levels of hormones during menstruation and ovulation. In general, what happens to the hormone levels between days 21 and 27, just prior to menstruation if the egg was not fertilized?

Which type of medication treats a sprained ankle that exhibits pain, redness, and heat?

Lice are small wingless insects that make their home in human hair and feed on very small amounts of blood from the scalp. They can be transferred from person to person and through the use of contaminated items such as brushes or pillows. Which type of disease is lice infestation?

Consider the diagram of an internal feedback mechanism that the body uses to help maintain homeostasis.What is the role of the central nervous system in this model?

What would cause antibodies to attack the cells of the body?

A student makes the analogy that the cardiovascular system is like a highway. Why is this a good analogy?

Meningitis is a disease that is characterized by swelling of the meninges that puts pressure on the brain. Which is least likely to be a symptom of this disease?

Leukopenia is a condition characterized by a decrease in white blood cells. What effect does leukopenia have on the body's ability to fight infection?

Jacob recently suffered a serious head injury in a car accident. He now has trouble remembering his life before the injury. What part of Jacob's brain may have been injured in the accident?

Which causes a drop in female hormone levels?

Barry was on an antibiotic, but after he took all of it, he had a rash and the doctor prescribed him an antihistamine. Which most likely describes what happened to Barry?

Fred is studying his notes from anatomy class. One list in his notes describes features of a CNS structure. anterior horns and posterior hornsgray matter inside, white matter outsidehippocampuscentral canalFred thinks this list contains an error. Which best describes the error?

Doctors do not administer vaccinations to people who are too sick. Which best explains why?

What does the immune system protect the body against?

Which of the following has the smallest number of cells?

Which best describes the testes?

Asbestosis is a lung disease that is caused by inhaling asbestos, a mineral that was once used as insulation and fire retardant in building materials. Which best describes abestosis?

This picture represents an area of a blood vessel that has been weakened. What does this picture best represent?

Which is an immune response?