Biology Final Exam Sem 1 P1 - Dec 2024

Front

What happens to blood vessels when body temperature falls?

Back

Blood vessels constrict.

Front

What is the body's normal response to maintain temperature?

Back

Blood vessels dilate or constrict.

Front

Do arteries carry oxygen-rich blood or oxygen-poor blood away from the heart?

Back

Arteries carry oxygen-rich blood away from the heart.

Front

What is the function of valves in the heart?

Back

To prevent back flow of blood.

Front

What is the main function of the aorta?

Back

The aorta carries oxygen-rich blood from the heart to the rest of the body.

Front

What is the role of the vena cava?

Back

The vena cava carries oxygen-poor blood from the body back to the heart.

Front

What is the significance of blood vessel dilation?

Back

Blood vessel dilation increases blood flow and helps to lower body temperature.

Front

What is the significance of blood vessel constriction?

Back

Blood vessel constriction reduces blood flow and helps to conserve body heat.

Front

What is the role of the heart in the circulatory system?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients.

Front

What are the two main types of blood circulation?

Back

Systemic circulation and pulmonary circulation.