PHR 2500 Final Exam Questions and
Answers Already Passed
What is the primary function of the cardiovascular system?
✔✔The primary function of the cardiovascular system is to deliver oxygen and nutrients to
tissues and remove waste products.
How does the respiratory system maintain homeostasis?
✔✔The respiratory system maintains homeostasis by regulating the levels of oxygen and carbon
dioxide in the blood.
What role do hormones play in the endocrine system?
✔✔Hormones act as chemical messengers that regulate various physiological processes,
including metabolism, growth, and reproduction.
What is the difference between innate and adaptive immunity?
✔✔Innate immunity is the body's first line of defense and responds quickly to infections, while
adaptive immunity is more specific and develops over time through exposure to pathogens.
1
,How does the digestive system break down food?
✔✔The digestive system breaks down food through mechanical and chemical processes,
including chewing and the use of digestive enzymes.
What is the significance of the central nervous system (CNS)?
✔✔The CNS, consisting of the brain and spinal cord, controls most functions of the body and
mind, including processing sensory information and coordinating responses.
What is homeostasis?
✔✔Homeostasis is the body's ability to maintain a stable internal environment despite external
changes.
How do vaccines work to protect the body?
✔✔Vaccines stimulate the immune system to produce an immune response, creating memory
cells that help fight off future infections of the same pathogen.
What is the primary function of red blood cells?
✔✔The primary function of red blood cells is to carry oxygen from the lungs to the rest of the
body and return carbon dioxide to the lungs for exhalation.
2
, What role does the liver play in detoxification?
✔✔The liver detoxifies harmful substances by converting them into less harmful compounds that
can be excreted by the body.
What is the purpose of the lymphatic system?
✔✔The lymphatic system helps maintain fluid balance, absorbs dietary fats, and plays a role in
immune defense by transporting lymph and white blood cells.
How does the skeletal system support movement?
✔✔The skeletal system provides structure and support, acting as a framework for muscles to
attach and enabling movement when muscles contract.
What is the role of the kidneys in the urinary system?
✔✔The kidneys filter blood to remove waste products and excess fluids, producing urine to be
excreted from the body.
How does the body regulate body temperature?
3
Answers Already Passed
What is the primary function of the cardiovascular system?
✔✔The primary function of the cardiovascular system is to deliver oxygen and nutrients to
tissues and remove waste products.
How does the respiratory system maintain homeostasis?
✔✔The respiratory system maintains homeostasis by regulating the levels of oxygen and carbon
dioxide in the blood.
What role do hormones play in the endocrine system?
✔✔Hormones act as chemical messengers that regulate various physiological processes,
including metabolism, growth, and reproduction.
What is the difference between innate and adaptive immunity?
✔✔Innate immunity is the body's first line of defense and responds quickly to infections, while
adaptive immunity is more specific and develops over time through exposure to pathogens.
1
,How does the digestive system break down food?
✔✔The digestive system breaks down food through mechanical and chemical processes,
including chewing and the use of digestive enzymes.
What is the significance of the central nervous system (CNS)?
✔✔The CNS, consisting of the brain and spinal cord, controls most functions of the body and
mind, including processing sensory information and coordinating responses.
What is homeostasis?
✔✔Homeostasis is the body's ability to maintain a stable internal environment despite external
changes.
How do vaccines work to protect the body?
✔✔Vaccines stimulate the immune system to produce an immune response, creating memory
cells that help fight off future infections of the same pathogen.
What is the primary function of red blood cells?
✔✔The primary function of red blood cells is to carry oxygen from the lungs to the rest of the
body and return carbon dioxide to the lungs for exhalation.
2
, What role does the liver play in detoxification?
✔✔The liver detoxifies harmful substances by converting them into less harmful compounds that
can be excreted by the body.
What is the purpose of the lymphatic system?
✔✔The lymphatic system helps maintain fluid balance, absorbs dietary fats, and plays a role in
immune defense by transporting lymph and white blood cells.
How does the skeletal system support movement?
✔✔The skeletal system provides structure and support, acting as a framework for muscles to
attach and enabling movement when muscles contract.
What is the role of the kidneys in the urinary system?
✔✔The kidneys filter blood to remove waste products and excess fluids, producing urine to be
excreted from the body.
How does the body regulate body temperature?
3
