The Immune System — Unit test Answers

Which are characteristics of the integumentary system? Select two options.Skin’s outer layer has living cells.Hair helps regulate temperature.Oil glands produce sweat and oil.Nails protect nerves.Hair stays on the head for two months.

The brain and spinal cord work together so the body can receive signals and react to the environment. What is the spinal cord?

What is semen?

Which bones are most important for protecting vital organs?

In the heart, one ventricle pushes blood with oxygen to the cells of the body. Where does the other ventricle push the blood without oxygen?

Stella is stressed about her upcoming midterm exams. Which glands are managing that stress during the tests?

What is the main function of the central nervous system?

The biceps brachii is the muscle that moves the arm up and down.Which type of muscle tissue makes up the biceps?

Which actions are involved in the immune response?

Staphylococcus aureus, or staph, is a bacteria that is commonly found in the nose and on the skin of humans. While it is typically not harmful to humans, it is sometimes able to enter the body through an injury or broken skin, and get into the bloodstream. When this happens, it can cause a serious infection called sepsis. Sepsis can cause an individual to go into shock and bodily organs to stop functioning. Symptoms of sepsis include inflammation, fever or hypothermia, increased heart rate, and rapid breathing.Which immune system component initially results in the inflammation and responds quickly when Staphylococcus aureus enters the bloodstream?

During digestion, water is both added and removed. Which area of the digestive system removes water?

Which person’s function in a school is similar to the central nervous system’s role in a human body?

The picture represents gas exchange in the alveoli. Observe what is happening at location X.

The student body president is launching a campaign to fight the spread of flu in his school. Which of the following should he encourage students to do?

Which is the largest gland in the body?

Xenotransplantation is using nonhuman animal organs in transplantation. Many people are against this practice. What would be the best argument for why xenotransplantation should be accepted?

Which of the following describes a positive feedback loop?

When is the most likely time for a female to become pregnant during her menstrual cycle?

In 2011, the number of transplants in the United States was 26,745, and the number of donors was 14,146. What is most likely the reason that there were more transplants than donors?

The picture represents a structure of the respiratory system.