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Opening in the inner dividing wall of the fetus heart that allows blood from the right side to mix with the blood on the left side.
-Scar tissue where the foramen ovale existed until it closed up shortly after birth.
-Oval shaped shallow depression best seen in the
-The two lower chambers of the heart
-Pump blood out to the lungs and body
-Larger in terms of volume than upper two chambers
-Finger-like muscles only located in the Ventricles of the heart
-Will contract just before the upper chambers
-Attached to the Chordae Tendinae to limit movement of valve cusps and prevent back-flow of blood
Attach Papillary muscles tot he individual sections (cusps) of the heart valves which they control.
-3 cusp valve located between the Right Atrium & the Right Ventricle
-Closes when the right ventricle contracts, allowing blood flow into the lungs and prevent back-flow into the right atrium
*Controlled by Papillary Muscles & Chordae Tendinae
Pulmonary (Semilunas) Valve
-A semilunar 3 cusps valve that controls the opening between the right ventricle and the pulmonary trunk
-1st to ship blood low in Oxygen away from the heart towards the lungs
-Prevent back-flow of blood; Back-flow of blood fills up its valves
Bicuspid (Mistal) Valve
-Valve located between & controls the opening of the LEFT atrium and LEFT ventricle
-2 distinct sections
Aortic (Semilunar) Valve
-Controls the opening between the LEFT Ventricle and Aorta
-3 cusps valve prevents back-flow
-The INNERMOST layer of the heart that lines the inner chambers & heart valves
-Layers from which cuspids are made
-Thick MIDDLE muscle layer of the heart that pumps blood through the circulatory system
-LEFT ventricle has the most of this particular tissue
-The thin, inner layer of the Pericardum sac that closely adheres to the heart. (Epioardium)
-The tough outermost layer of the pericardium that is attached to the diaphragm and the sternum
Superior Vena Cava (SVC) Orafice
-Opening in the RIGHT Atrium through which the SVC passes
-Drains any blood originating from the upper extremities, head, neck, and thoracic cavity
-Named by direction and location, not size
Inferior Vena Cava (IVC) Orifice
-Opening of the IVC directly into the RIGHT Atrium of the heart
-Drains blood originating from the lower extremities and the abdominal region.
Right Atrioventrical Orifice
-The opening between the RIGHT Atrium and the RIGHT Ventrical
-Controlled by the Tricuspid valve
Left Atrioventrical Orifice
-The opening between the LEFT Atrium and the LEFT Ventrical
-Controlled by the Bicuspid valve
Coronary Sinus Vein
-Large vein that drains blood from the heart muscle itself
-Opens in the RIGHT Atrium
Pulmonary Vein Orifice
-Four openings of Four Pulmonary veins directly into the LEFT Atrium of the heart
-opening between LEFT Ventrical & the Aorta
-Controlled by the Aortic Semilunar Valve
-The two way exchange of blood between the heart & lungs
-Circulation begins in the Right Ventricle & ends in the Left Atrium
-This is how blood becomes oxygenized
- Upper right chamber
-Most important in embalming to establish and maintain drainage. -Low in oxygen blood
-Involved in Systematic Circulation
- Lower right chamber
-Pumping un-oxygenated blood to the lungs to pick up oxygen
-Involved in Pulmonary Circulation
- lower left chamber
-largest and strongest muscle
-last pump of blood with oxygen to the body via arteries
-Involved in Systematic Circulation
-The exchange of blood between the heart and the rest of the body; except the lungs.
-Starts in the left ventricle (LV) and ends in right atrium (RA).
-Takes oxygen to the body and returns the waste.
-A remnant of the Ductus Arteriosis
-This structure attaches to both the aortic arch and the pulmonary trunk
-Two arteries that ship low oxygen blood away from fetal heart toward placenta.
- It is inside umbilical cord at birth and falls off with umbilical cord falling off
-Blood vessel that ships high oxygen from placenta to belly button.
-Then after birth it is part of umbilical cord that falls off
Tunica Externa (Adventita)
-Outermost layer of a blood vessel which connects it to surrounding tissues
-Middle layer or an Artery or Vein
-Outermost layer of Arteriole
-Made up of smooth/visceral muscle
-Innermost layer of blood vessels and Venules
-Only layer of Capillaries
-Dosent need its own blood supply
-Blood vessels feeding the outer layer(s) [Tunica Externa & Tunica Media]
-Appear as red-lines on arteries
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