lub\"-closing of dub\" \" closing of yalves (ventrieles contract) valves (heart

Question

lub"-closing of dub" " closing of yalves (ventrieles contract) valves (heart relaxes) brings blood to right atrium from above - brings blood to right atrium from below takes blood from right ventricle to Lungs :brings blood from lungs to left atrium C9 takes blood from left ventricle to body INFARCTION - Death or damage to the tissue of the myocardium (usually because of a blocked artery) PECTORI s - Chest pain caused by insufficient oxygen to the heart (usually occurs during exertion or cise that increases demand for oxygen) CONDUCTION SYSTEM OF HEART (SA node): Instability of the nerve membrane parasympathetie generates a nerve impulse by itself. Can be regulated by sympathetic and nervous system. Impulse spreads out over atria causing them to contract. Node (AV node): Transmits impulse from atria to the ventricles along special tract of fibers called the These bundles branch out into special conduction fibers called If the AV node is destroyed or damaged the atria and ventricles will contract independently ARTERIES (also includes arterioles) Primary function: distribute blood away from heart 3 layers: . Tunica_ 2. Tunica 3. Tunica inner layer, single layer of endothelial cells. outer connective tissue middle layer, contains vasodilators and vasoconstrictors

Explanation / Answer

Heart sounds:

1. mitral and tricuspid valves

2. aortic and pulmonic valves.

Vessels connected to heart:

1. Superior vena cava

2. Inferior vena cava

3. Pulmonary artery

4.Pulmonary veins

5. Aorta.

6. Myocardial

7. Angina

Conduction system of the heart:

1. Sinoatrial node

2. Atrioventricular

3.Bundle of His, Purkinje fibres.

Blood vessels:

1. Tunica externa

2. Tunica media

3. Tunica interna/intema

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.