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 does Dichotomy mean

"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among the

What cell phones were used in the 2000s? Be descriptive.

NEED HELP ASAP FIRST PERSON TO CORRECTLY ANSWER WILL GET MARKED BRAINLIEST 4. What statement best describes the composition (parts that make up) of an ecosystem

Which is the simplified form of the expression (6 Superscript negative 2 Baseline times 6 Superscript 5 Baseline) Superscript negative 3

What do you think some artifacts of ancient Mesopotamia might have been ?? 12 points

People hoping to travel to other worlds are faced with huge challenges. One of the biggest is the time required for a journey. The nearest star is 4.1×1016m 4.1

On the previous problem, you found a unit rate of ounces per box. Explain how you find a unit rate when given a rate.

37. Except for one letter, the letters in the word FEAR follow one another in opposite order to that in which they occur in the alphabet. What is that letter?..

Evaluate the stacked function machines for an input of 21*