ig of class 1. (1.5 pts) Place the heart wall structures in the order you would

Question

ig of class 1. (1.5 pts) Place the heart wall structures in the order you would find nc them, beginning with the most superficial. A. Serous layer of the pericardial sac Myocardium Fibrous layer of the pericardial sac Epicardium Pericardial cavity E. th O Endocardium 2. (3.25 pts) After being depleted of oxygen on its pass through the body's (A) circuit, the blood B) vena cavae and starts to fill the returns via the( through the tricuspid valve, an 01valve, the blood then enters the tEiventrice. Once this ventricle fills, the electrical stimulation of the muscle layer of the heart, theE), will force this region of the heart to contract. When the ventricle contracts the tricuspid valve will close; this is an adjustment that is modulated by the(G), structures which are attached to the papillary muscles of the ventricles and help to hold the valves closed. When enough pressure arises from the contraction of the ventricles, the(Hiwill open, and blood will leave the heart via theand travel to the .nwhere it will gain oxygen. Blood returns from the -IKLcircuit to the (LLatrium. The blood in the heart cannot provide nutrients to the myocardium of the heart. This layer will need to gain oxygen and nutrients via the blood supply of theM circuit. (C)atrium. After passing A. H. C. K. D. M.

Explanation / Answer

A- deoxygenated

B- supirior and inferior

C- right

D- atrium and ventricle

E- right

F- pukinj fiber

G - cardiac impluse

H- semilunar

I- pulmonary vein

J- lungs

K- oxygeneted

L- left

M- coronary artary from the aorta

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