nataliemandisi2005 nataliemandisi2005

04-09-2020
Biology

contestada

Explain how valves help the transport of blood in veins.

Respuesta :

nazz1010 nazz1010

04-09-2020

Answer:

The valves' main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood cannot flow back

Answer Link

Otras preguntas

What sort of problem do you use acceleration due to gravity ? What sort of problem do you not ?

what is 5,900 round to the nearest thousand

PLEASE HELP MEthank you, and 15 points!!Gretchen and Ezia received equal scores on a test made up of multiple choice questions and an essay. Gretchen got 18 mul

What role did the Scientific Revolution play in bringing about the Enlightenment?

I need help with density I don't get it at all

Which is better salary offer$550per 40-hour week or $13.00 per hour for 40 hours

Fern rounded to the nearest ten to estimate 548-132. She subtracted 540-130 and got 410. Is Fern's estimate correct? Explain.

Calculate how much work you need to move the 130 N trunk to a ledge 2 m above.

what happened to the loyalists property after the revolutionary war was over

Tell the value of the underlined digit 17,874,000,000 the 1 is underlined