Question

base your answers to questions 5 - 7 on the table, which shows the major functions of some human body systems.

1. which of these would best model interactions between the circulatory and excretory systems?

(1) a filtration system that filters toxins out of water
(2) a battery interacting with a model car to help it move
(3) a system of openings that hold air and move it into tubes
(4) a computer that takes in information and sends information to other computers

1. which function is likely to be carried out through interactions between the digestive and circulatory systems?

(1) moving parts of the body
(2) delivering oxygen to cells
(3) delivering nutrients to cells
(4) removing wastes from blood

1. which of these explanations best describes how the nervous, respiratory, and circulatory systems interact to help maintain stable conditions in the body?

(1) the nervous system takes in gases that cause the lungs to expand, and the circulatory system sends information that causes the lungs to contract.
(2) the circulatory system sends information to the nervous system that causes oxygen to enter the blood stream and move to cells.
(3) the circulatory system causes the lungs to expand, which allows the nervous system to transport oxygen to cells.
(4) the nervous system sends signals that cause the lungs to expand, and oxygen from the lungs is transported to cells by the circulatory system.

1. the diagram below shows an artery, a type of blood vessel that carries blood away from the heart. the structure of an artery helps it maintain an appropriate blood pressure. how would nervous tissue interact with smooth muscle tissue in an artery in order to increase blood pressure?

(1) smooth muscle tissue would cause nervous tissue to harden and contract.
(2) smooth muscle tissue would send signals to nervous tissue that cause it to expand.
(3) nervous tissue would transmit information that causes smooth muscle tissue to contract.
(4) nervous tissue would send chemical signals to smooth muscle tissue that cause it to relax.

Explanation:

For question 5: The circulatory system transports substances and the excretory system eliminates wastes. A filtration system (like a kidney - like filter in water) is a good model as the excretory system (e.g., kidneys) filters waste from the blood (circulatory system).
For question 6: The digestive system breaks down food and absorbs nutrients. The circulatory system then transports these nutrients to cells.
For question 7: The nervous system sends signals (e.g., to make lungs expand for breathing). The respiratory system (lungs) takes in oxygen, and the circulatory system transports that oxygen to cells.
For question 8: Nervous tissue transmits impulses. To increase blood pressure, nervous tissue would signal smooth muscle tissue (in arteries) to contract, reducing the diameter of the artery (since smaller diameter increases pressure for the same volume of blood flow).

Answer:

1. (1)
2. (3)
3. (4)
4. (3)