All categories

2 years ago

When blood first reaches the lungs it contains...

Biology

1 answer:

erma4kov [3.2K]2 years ago

8 0

Answer: I think C (I apologize if not)

Explanation: Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery, and to the lungs.

In the lungs, the blood refills its oxygen supply and gets rid of carbon dioxide. The oxygenated blood returns from the lungs to the left atrium through the pulmonary veins to the heart. The left ventricle then pumps this oxygen-rich blood throughout the body. Blood first enters the heart's right atrium. A muscle contraction forces the blood through the tricuspid valve into the right ventricle. When the right ventricle contracts, blood is forced through the pulmonary semilunar valve into the pulmonary artery. Then it travels to the lungs.

You might be interested in

Distinguish between opposite, alternate, whorled, and<br> rosette leaf arrangements.

qaws [65]

Answer: You can consult:

When there are three or more leaves growing from each node, the arrangement is called whorled. Plants such as the dandelion that have cluster of leaves growing around the base of the plant are said to have rosette arrangement.

Explanation:

I'm not sure but hope it helps.

8 0

3 years ago

Calculate the density of sulfuric acid if 45 mL of the acid weighs 100g.

Lena [83]

Answer:

$\boxed{\sf Density = 2.23 \ g/mL}$

Given:

Mass = 100 g

Volume = 45 mL

To Find:

Density

Explanation:

Formula:

$\boxed{ \bold{Density = \frac{Mass}{Volume}}}$

Substituting value of mass & volume in the formula:

$\sf \implies Density = \frac{100}{45} \\ \\ \sf \implies Density = 2.23 \: g/mL$

4 0

3 years ago

___ has the greatest influence on the resting membrane potential

Svetach [21]

Potassium has the greatest influence on the resting membrane potential. Resting membrane potential is caused by the differences in the concentrations of ions inside and outside the cell. At resting membrane potential there are more sodium ions outside the neuron and more potassium ions inside the neuron. For a neuron the resting membrane potential is about -70 mV.

4 0

3 years ago

Too much skepticism can lead to what

Serhud [2]

Too much skepticism can lead to new ideas.

7 0

3 years ago

Read 2 more answers

Joan and Mike's teacher show them a picture of an atom and ask them to identify it using the periodic table. Joan says the atom

ivann1987 [24]

Hi,
The answer should be letter C.

3 0

3 years ago