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PHS Biology SB4.2 Cardiovascular > Lesson 5 > Flashcards

Flashcards in Lesson 5 Deck (10)
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1
Q

2.​ Trace the flow of blood in the pulmonary circuit.

A

The flow of blood through the pulmonary circuit begins with the collection of blood coming from the body in the right atrium of the heart. This blood is rich with carbon dioxide. The blood then passes into the right ventricle where it is pushed out and into the two pulmonary arteries, which lead into arterioles and eventually pulmonary capillaries, which allow for the diffusion of carbon dioxide from the blood into each lung and oxygen to be diffused from each lung into the blood.​These same pulmonary capillaries then carry blood rich with oxygen to the venules which lead into four pulmonary veins which deliver blood into the left atrium of the heart.

2
Q
  1. What kind of blood is carried in the pulmonary arteries, and how is this different from the kind of blood carried by other arteries?
A

The pulmonary arteries carry blood that is poor in oxygen but rich in carbon dioxide. These arteries differ from other arteries in the body in that they carry oxygen poor blood rather than oxygen rich blood.

3
Q
  1. What kind of blood is carried in the pulmonary veins, and how is this different from the kind of blood carried in other veins?
A

The pulmonary veins carry blood that is rich in oxygen. These veins differ from other veins in the body in that they carry blood rich in oxygen rather than oxygen poor blood.

4
Q
  1. What is the largest artery in the systemic circuit? What are the large veins in the systemic circuit?
A

The largest artery in the systemic circuit is the aorta. The largest veins in the systemic circuit are the inferior and superior vena cavae.

5
Q
  1. Trace the path of blood flow in the systemic circuit listing only the type of vessel it is flowing through, not its proper name.
A

The path of the systemic circuit begins in the left ventricle of the heart which pumps blood into the aorta. The aorta then delivers blood into the many arteries found throughout the body which lead into arterioles and eventually systemic capillaries, where oxygen is delivered to the tissues and carbon dioxide is picked up. These same capillaries then deliver the blood rich in carbon dioxide into venules, then veins, and finally into the two major veins the vena cava that are responsible for delivering blood into the right atrium of the heart.

6
Q
  1. What is the purpose of the coronary arteries? Why do they sometimes become clogged?
A

7.​The purpose of coronary arteries is to deliver oxygen to the heart via the aorta, because the heart is not nourished by the blood contained in its chambers. The coronary arteries often become clogged or blocked due to their small diameter.

7
Q
  1. What organ is the portal system associated with, and what is its full name?
A

A portal system begins and ends with capillaries. The portal system of the body is associated with the liver. As such, its complete name is the hepatic portal system.

8
Q
  1. What is the role of the hepatic portal vein?
A

​The hepatic portal vein delivers blood coming from the capillaries surrounding the villi of the small intestine to the liver

9
Q

10.​What is the role of the hepatic vein?

A

The hepatic vein delivers blood from the liver to the inferior vena cavae

10
Q
  1. What are the two circuits involved in the cardiovascular pathway?
A

The cardiovascular system includes two circuits: the pulmonary circuit, which circulates blood through the lungs, and the systemic circuit, which circulates blood through the body to all the tissues.