ACTIVITY 12: ACTIVITY 12: CARDIOVASCULAR CARDIOVASCULAR

SYSTEMSYSTEM

ACTIVITY 12: ACTIVITY 12: CARDIOVASCULAR CARDIOVASCULAR

SYSTEMSYSTEM

Post-Lab DiscussionPost-Lab DiscussionPost-Lab DiscussionPost-Lab Discussion

Atrioventricular valve

Semilunar valve

Arterial Arterial SystemSystem

Venous Venous SystemSystem

ANSWERS TO ANSWERS TO GUIDE QUESTIONS:GUIDE QUESTIONS:

ANSWERS TO ANSWERS TO GUIDE QUESTIONS:GUIDE QUESTIONS:

1. Why is the ventricle more 1. Why is the ventricle more muscular than the atria?muscular than the atria?

……because the ventricle needs to because the ventricle needs to create enough pressure to keep the create enough pressure to keep the blood circulating throughout the blood circulating throughout the body.body.

1. Why is the ventricle more 1. Why is the ventricle more muscular than the atria?muscular than the atria?

……because the ventricle needs to because the ventricle needs to create enough pressure to keep the create enough pressure to keep the blood circulating throughout the blood circulating throughout the body.body.

2. What valve prevents the 2. What valve prevents the backflow of blood from conus backflow of blood from conus arteriosus to the ventricle?arteriosus to the ventricle?

The semilunar valveThe semilunar valve

2. What valve prevents the 2. What valve prevents the backflow of blood from conus backflow of blood from conus arteriosus to the ventricle?arteriosus to the ventricle?

The semilunar valveThe semilunar valve

3. How does the blood in the 3. How does the blood in the pulmonary vein differ from that pulmonary vein differ from that in the other veins?in the other veins?

It is oxygenated blood.It is oxygenated blood.

3. How does the blood in the 3. How does the blood in the pulmonary vein differ from that pulmonary vein differ from that in the other veins?in the other veins?

It is oxygenated blood.It is oxygenated blood.

4. Name the three veins that 4. Name the three veins that empty blood into the sinus empty blood into the sinus venosus.venosus.

Left precava / left anterior vena Left precava / left anterior vena cavacava

Right precava / right anterior vena Right precava / right anterior vena cavacava

Postcava / posterior vena cavaPostcava / posterior vena cava

4. Name the three veins that 4. Name the three veins that empty blood into the sinus empty blood into the sinus venosus.venosus.

Left precava / left anterior vena Left precava / left anterior vena cavacava

Right precava / right anterior vena Right precava / right anterior vena cavacava

Postcava / posterior vena cavaPostcava / posterior vena cava

5.5. Trace the blood from the Trace the blood from the femoral veins of the leg tofemoral veins of the leg to the the kidneykidney..

Femoral vein Renal portal vein

5.5. Trace the blood from the Trace the blood from the femoral veins of the leg tofemoral veins of the leg to the the liverliver..

Femoral veinFemoral vein Pelvic veinPelvic vein

Anterior abdominal vein

Anterior abdominal vein

Anterior abdominal vein

Anterior abdominal vein

Hepatic Vein / Hepatic Portal Vein

Hepatic Vein / Hepatic Portal Vein

6. What visceral organ system 6. What visceral organ system uses the portal system uses the portal system extensively?extensively?

UrinaryUrinary

Liver/ DigestiveLiver/ Digestive

7. Trace the shortest route a 7. Trace the shortest route a blood corpuscle could take in blood corpuscle could take in traveling from the systemic traveling from the systemic arch to the intestine to the arch to the intestine to the right atrium.right atrium.

Systemic Systemic arch arch

Systemic Systemic arch arch

AnteriorAnterior

Mesenteric Mesenteric

arteryartery

AnteriorAnterior

Mesenteric Mesenteric

arteryartery

Dorsal Dorsal

Aorta Aorta

Dorsal Dorsal

Aorta Aorta Intestinal Intestinal

artery artery

Intestinal Intestinal

artery artery

Intestinal Intestinal

capillaries capillaries

Intestinal Intestinal

capillaries capillaries IntestinalIntestinal

veins veins

IntestinalIntestinal

veins veins

HepaticHepatic

PortalPortal

veinvein

HepaticHepatic

PortalPortal

veinveinpostcava postcava postcava postcava

Sinus Sinus

venosus venosus

Sinus Sinus

venosus venosus Right atriumRight atriumRight atriumRight atrium

8. How does the blood in the 8. How does the blood in the pulmocutaneous arch differ from pulmocutaneous arch differ from that in the higher two arches?that in the higher two arches?

It contains deoxygenated blood.It contains deoxygenated blood.

Do you have biology in your blood?Do you have biology in your blood?