Chapter 21 Kaltura

Your heart should be the size of your ____ but can be as big as a soccer ball.

fist

An enlarged heart condition is called

cardiomyopathy

The heart is ____- ____ chambered pumps.

two two

Only _____ exit the ventricles.

arteries

Only ___ enter the atria.

veins

The pulmonary circuit carries ____- rich blood.

CO₂

The systematic circuit carries ____-rich blood.

oxygen

The pulmonary circuit is on the

right

The systematic circuit is on the

left

Pulmanory arteries carry ______ blood

deoxygenated

Pulmanory veins carry ______ blood.

oxygenated

What is the pericardium?

serous membrane lining the pericardial cavity, which surrounds the heart

Fibrous pericardium is like a

brown paper sac

The _______ pericardium covers the heart’s outer surface.

visceral (serous= saran wrap-like)

The ______ pericardium lines the inner surface of the pericardial sac.

parietal

The myocardium is

heart muscle proper with intercalated discs

The layers of heart from out to in are

visceral pericardium, myocardium, endocardiumWhat

What is the cone-like structure that serves as on outflow for pulmonary arteries from the right ventricle to the lungs?

Conus Arteriors, Infundibulum

The ____ go to the lungs.

pulmonary arteries

The visceral layer of serous pericardium is known as the

epicardium

In the gut, the visceral layer of serous peritoneum is called the

serosa.

Cardiac tamponade is a killing blow to the chest that causes ________ and the heart will not beat

blood to fill the pericardial sac

The black in our lungs is

carbon

The pectinate muscles are in the

right atrium

Papillary muscles are found in

both ventricles

The three layers of the heart from out to in are

epicardium, myocardium, and the endocardium

Cardiac muscle is considered

involuntary striated muscle

The intercalated discs contain the

gap junctions that connect one cardiomyocyte to another

The endocardium is made of

epithelial and connective tissue

The pericardial cavity is located within the serous pericardium, between the

parietal and visceral layers

The heart has external ____ that mark the internal boundaries.

sulci

The last place for blood to coagulate is the _______, which is located deep to the 4th intercoastal.

left ventricle

The base of the heart is the

superior, flat portiion

The apex of the heart is the

inferior, pointed portion

What vessel empties blood from the heart muscle into the right atrium?

coronary sinus, along with the sup. and inf. vena cava

The aorta has the

brachiocephalic (innominate), left common carotid, and the left subclavian artery

The pulmonary veins go to the ______ from the lungs.

left atrium

The fatty sulcus that separates the ventricles is called the

interventricular sulcus

The first branch of the aorta nourishes the heart with

oxygenated blood

The deoxygenated blood will go via the ______(vein) into the right atrium along with the SVC and IVC

coronary sinus

What vessels enter the right atrium

coronary sinus, IVC, SVC

Pulmanory arteries from the ______ and go to the lungs.

right ventricle

The right atrioventricular valve is called the

tricuspid valve

The left atrioventricular valve is called the

bicuspid valve, mitral valve

The atrioventricular valves are attached by

chordae tendineae

Pulmanory = _______, Systematic = _________

right, left

The heart strings are called

chordae tendineae

The papillary muscles come from the ______, the meaty net.

trabeculae carni

The right atrium contains the

tricuspid valve

The right ventricle contains the

pulmonary trunk and pulmonary valve

The left atrium contains the

mitral valve

the left ventricle contains the

aorta and aortic valve

The pulmonary semilunar valve and aortic semilunar valve do not have

heart strings

The heart is pretty much

two tubes that come together and twist

The myocardium is thick in the

left ventricle

The moderator band is in the right ventricle and ensures

that both ventricles and atria contract simultaneously

The chordae tendineae are ___ to the papillary muscles

superior

The heart has a

fibro skeleton

Blood moves from the left atrium to the _______.

left ventricle

Blood from the left ventricle moves to the

aortic semilunar valve into the aorta

From the right ventricle, the blood is going to your

lungs

From the left ventricle, blood is going

all the way to your fingers and toes

Papillary muscles prevent

blood flowing back into left atrium

Usually, we have _ pulmonary veins

4

Systole means

contraction

Diastole means

relaxation

The heart has its own ______ which includes the sinoatrial node and the atrioventricular node.

electrical supply

There are electrical impulses running through fibers from the nodes called ______ into the papillary muscles to cause contractions.

bundles of his

ECG stands for

electrocardiogram

ECGs record

P waves (atrial depolarization), QRS complex (ventricular depolarization), and T wave (ventricular repolarization)

ECG measures ______ and _______.

amplitude and distance

What cranial nerves are parasympathetic?

3, 7, 9, 10