Question

How does the circulatory system work at the tissue level?

1.The heart pumps the blood.

2.Nutrients are delivered throughout the body.

3.Cardiac muscle contracts.

4.Blood cells carry nutrients.

I don't know which one

Answer 1

The heart pumps the blood.

Step-by-step explanation:

I took the quiz and the questions/answers were:

What is the basic unit of all living things?

• tissue ❌

• organ ❌

• cell ✅

• organ system ❌

Organ system - circulatory system

Organ - heart

Tissue - cardiac muscle

(human body not correct/included)

How does the circulatory system work at the organ level?

Cardiac muscle contracts. ❌

Nutrients are delivered throughout the body. ❌

The heart pumps the blood. ✅

Blood cells carry nutrients. ❌

I tried the Cardiac muscle contracts and it was incorrect.

(This is K12 4.02 Quiz: Levels of an Organ System, may be different for other platforms.)

Have a wonderful day!

Answer 2

its 3. Cardiac muscle contracts.

Step-by-step explanation:

I took the test and put the wrong answer and the correct one showed up.