WSU BIOLOGY 315 Lab Exam 3

Apex of Heart

ft - bottom left side

Base of Heart

TA will choke heart

Right Atrium of the Heart

chamber TA will tap it

Right Auricle of Heart

feature, black nub posterior side

Above atrium

Left Atrium of the Heart

chamber

Left Auricle

ft will lift elephant shaped on apex side

Right Ventricle of the Heart

chamber

Left Ventricle of Heart

chamber

Anterior Surface of the Heart

hand in front- region

Diaphragmatic Surface of Heart

hand below heart

region

Right Pulmonary Surface of Heart

region

Left Pulmonary Surfaces

region

Right Border of Heart

Opposite apex

boundary

Left Border of Heart

Apex side

boundary

Inferior Border of Heart

blue area

Superior Border of Heart

green

boundary

Coronary Sulcus

depression

under aorta+trunk

below all tubes, probe laying down above base

Anterior Interventricular Sulcus

depression on anterior heart

Posterior Interventricular Sulcus

depression on posterior side

Aorta

Largest whole structure- with tubes

leaves left ventricle

Ascending Aorta

First portion

Arch of Aorta

Follows ascending aorta

Pulmonary Trunk

collective structure

below aorta

Left Pulmonary Artery

On the left side of heart (below)

Right Pulmonary Artery

right side of heart (above)

backside of heart

Ligamentum Arteriosum

black clot

Webbing on small heart

Ligamentum Arteriosum Board Question

Vestige of the fetal ductus arteriosus,

which shunted blood in the pulmonary trunk

away from the lungs in the fetus

Superior Vena Cava

top part of probe

Inferior Vena Cava

bottom part of probe

Pulmonary Veins

collective structure

all 4 probes in

Left Superior Pulmonary Veins

Upper tube, apex-side of probe

Left Inferior Pulmonary Veins

Lower tube, apex-side of probe

Right Superior Pulmonary Veins

Upper tube, probe side opposite the apex

Right Inferior Pulmonary Veins

Lower tube, probe side opposite the apex

Coronary Arteries

located in coronary sulcus

Right Coronary Artery

Under right auricle

Right Marginal Artery

Below right coronary artery

y shaped

Posterior Interventricular Artery

st

inside posterior interventricular sulcus

Left Coronary Artery

Under left auricle OR

peel aorta + trunk→ sitting in coronary sulcus on top

Anterior Interventricular Artery

st

in anterior interventricular sulcus

Circumflex Artery

Squiggly, on left ventricle

Right atrium

part of left ventricle

The Right Coronary Artery Supplies:

Left atrium

part of the right ventricle

The Left Coronary Artery Supplies:

Cardiac Veins

Posterior T ST

Coronary Sinus

Space

top middle of the T

Probe inside

Great Cardiac Vein

goes left of coronary sinus

ST

will be lifted

Middle Cardiac Vein

st

going downwards

base of t

Small Cardiac Vein

top right side of T

Fibrous Pericardium

covering

Outside of the flap

Serous Pericardium

collective covering

Parietal Layer of Serous Pericardium

feature

Shiny part of the flap

Visceral Layer of the Serous Pericardium

ft

On the heart/ touching it

pg 3

Pericardial Cavity

space

Between the flap and the heart

Transverse Pericardial Sinus BQ

Connects the left and right sides of the pericardial cavity

Olbique Pericardial Sinus BQ

a blind cul de sac posterior to the heart

Endocardium

Inner layer of heart

Myocardium

middle layer of heart

Epicardium

Most outer layer of heart

Interatrial Septum

structure

Will be pinched

Fossa Ovalis

depression bean

tan smooth

Fossa Ovalis Board Question

oval depression- in the interatrial septum,

indicating the location of the fetal oval-

where blood was shunted from the right atrium to the left atrium in the fetus

Right Atrium

A chamber

Will be tapped

top left

Pectinate Muscle

Dark, branching ST

Sinus Venarum

smooth surface next to pectinate muscle

Opening of the Superior Vena Cava

opening

Top of probe

Opening of the Inferior Vena Cava

opening

Bottom of probe

Opening of the Coronary Sinus

space

next to fossa ovalis

Left Atrium

top chamber

same side apex

Left Auricle

Looks like an elephant ear

Openings of the Pulmonary Veins

collective space

all 4 probes

backpack straps

Interventricular Septum

collective structure

divides ventricles

Muscular Part of the Interventricular Septum

Thicker, inferior

portion

Membranous Part of the Interventricular Septum

Thinner, superior portion

Right Ventricle

chamber below right atrium

Right Atrioventricular Orifice

space pull flap to reveal

probe inside

doorway

Tricuspid Valve

STRUCTURE

Probe through the right atrioventricular orifice

the door

Papillary Muscles

The carrot itself, thicker

st

Tendinous Cords

Cords on papillary muscle

Greens of carrot

Trabeculae Carneae

Roots of the carrot/ the dirt

WALL of the right ventricle

Conus Arteriosus

Cone shaped narrowing

Opening of the Pulmonary Trunk

space

inside large hole on the non apex side of the heart

Pulmonary Valve

collective structure

opening of the space opened up to reveal

3 cusps

Semilunar Cusps of Pulmonary Valve

Components of the valve

Left Ventricle

chamber next to apex

Left Atrioventricular Orifice

Space

reveals hole into left ventricle

will be seen sideways

Mitral Valve

st in left atrioventricular orifice

Aortic Vestibule

Narrowing

shiny

heart will be opened up

Opening of the Ascending Aorta

Whole space

Includes aortic vestibule

heart opened up

Aortic Valve

collective structure

heart opened up like book

Semilunar Cusps of the Aortic Valve

Components of the aortic valve

right atrium,

right ventricle,

PULMONARY artery,

LUNGS,

left atrium,

left ventricle,

AORTA,

REST OF BODY

flow of blood

where is blood oxygenated + deoxygenated

deoxygenated- vena cava, right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, lungs

oxygenated- left atrium, mitral valve, left ventricle, aortic valve, aorta, rest of body

gonadal arteries

in females these are the ovarian arteries

in males they are the testicular arteries

Circulation of Blood Through the Heart

Veins -> superior/inferior vena cava -> right atrium -> right ventricle (via tricuspid valve) -> pulmonary trunk (via pulmonary valve) -> left/right pulmonary arteries -> lungs -> pulmonary veins -> left atrium -> left ventricle (via mitral valve) -> aorta (via aortic valve) -> arteries -> capillaries

When Blood is Deoxygenated in Circulation Steps

Steps from veins to pulmonary arteries

Difference Between Arteries and Veins

Arteries: round, away from heart, lighter in cadaver

Veins: flat, toward heart, darker in cadaver