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BIO 255 EXAM 1 Questions and Answers (Verified Answers)

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BIO 255 EXAM 1 Questions and Answers (Verified Answers) BIO 255 EXAM 1 Questions and Answers (Verified Answers) BIO 255 EXAM 1 Questions and Answers (Verified Answers)

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  • April 28, 2024
  • 12
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
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BIO 255 EXAM 1 Questions and Answers
(Verified Answers)
1. The pulmonary circuit provides:

Deoxygenated blood flow in the right side of the heart to the lungs

2. The systemic circuit provides:

Oxygenated blood to the rest of the body via the left side of the heart

3. Pulmonary Arteries take blood ______ from the heart and Pulmonary

veins____ blood to the heart

Arteries: Away, **think AA**

Veins: Return blood

4. What is the name of the wall that seperates the left and right heart called?

interventricular septum

5. What are the 4 chambers of the heart?

2 atria (top)

2 ventricles (bottom)

6. Does the heart use blood?

The heart supplies its own blood by coronary circulation

7. Cardiac muscle is

striated,

involuntary,

uninucleate,

intercalated discs,

, fat & short

branched

8. intercalated discs contain

gap junctions and desmosomes

9. The visceral layer of the heart is ________to the heart

Closest to the heart

**Visceral layer is also considered the pericardium

10. The covering of the heart is called

pericardium

11. What is the function of the fibrous tissue layer of the heart?

-Prevents over-stretch of the heart

-prevents friction & provides protection

-Anchors heart to mediastinum

12. Pulmonary veins are ______ blood:

13. Pulmonary arteries are ______blood:

Veins: Oxygenated

Arteries: Deoxygenated

14. Blood flow steps

1. Deoxygenated blood goes through Superior/ Inferior Vena Cava, Coronary Sinus

2. right atrium

3. through the Tricuspid valve

4. into the right ventricle

5. through the pulmonary valve into the pulmonary trunk

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