Lab 4

Question 1

Name the part of the hearts conducting system that is located in the inter ventricular septum

Answer 1

The av node lays in the inter ventricular septum

Question 2

Purkinje fibers in the heart are made of

Answer 2

heart muscle

Question 3

The aortic semilunar valve closes

Answer 3

eat the end of ventricular contraction.

aortic semilunar valve prevents blood from returning to the left ventricle

Question 4

What is the function of papillary muscles and where are they located in the heart.

Answer 4

papillary muscles attach mitral valve cusps to the chord tendinae in the ventricles

Question 5

Name one function of the fibrous pericardium and the pericardial cavity

Answer 5

protects the hart by anchoring it to the surrounding walls

Question 6

The spatial relationship between the trachea and the esophagus is the trachea lies ________ to the esophagus

Answer 6

anterior

Question 7

In both Lungs, the largest surface is called the

Answer 7

costal surface

Question 8

define the parietal and visceral pleura. What is there primary function

Answer 8

-paretal pleura Lins the inner chest wall
visceral pleura envoies the lung
-both project the Lunds in the visceral cavity

Question 9

Why is it important that the trachea is reinforced with carriage rings

Answer 9

prevents the airways from collapsing

Question 10

What muscles contract during quiet inspiration

Answer 10

diaphragm +intercoastle muscles