Notes cardiovascular system

1
Class Topics
Title Anat Phys 4/3/07
Objectives

• .

• Notes cardiovascular system
• Heart coloring
• Fetal Heart
• "Facts which at first seem improbable will, even
  on scant explanation, drop the cloak which has
  hidden them and stand forth in naked and simple
  beauty."
• Galileo Galilei, 1638

Saturday, October 31, 2009 1018 PM
2
Class Assignments
By When
What

• Due this class period
• Due next class period
• Due in the future

3
Atria

• Minimal role in pumping blood
• auricles - earlike hollow appendages
• used as an overflow
• move the blood to the ventricles

4
Ventricles

• Muscular chambers
• thick layer of myocardium
• left wall is thickest
• trabeculae carnea connect to papillary muscles
• attach to valves

5
Valves

• Tricuspid valve
• between rt. atrium ventricle
• Pulmonary semilunar valve
• between rt. ventricle pulmonary trunk
• Mitral valve (bicuspid)
• between left atrium ventricle
• Aortic semilunar valve
• between left ventricle aorta

6
Blood flow

• Deoxygenated blood enters the heart from the
  inferior vena cava, superior vena cava, and the
  coronary sinus
• From rt atrium to rt ventricle through the
  tricuspid valve
• From rt ventricle to pulmonary trunk through the
  pulmonary semilunar valve

7
Blood flow

• From the pulmonary trunk to the rt and left
  pulmonary arteries to the lungs
• Oxygenated blood returns from the lungs in the
  pulmonary veins to the left atrium
• From the left atrium to the left ventricle
  through the bicuspid valve

8
Blood flow

• From the left ventricle to the aorta through the
  aortic semilunar valve
• From the aorta to the rest of the body
• Back to the right atrium through the inferior
  vena cava, superior vena cava, and coronary sinus

9
From http//www.cardioliving.com/consumer/Heart/I
mages/Heart_Anatomy.JPG
10
From http//info.med.yale.edu/intmed/cardio/echo_
atlas/references/heart_anatomy.html
11
Link

• Gateway Community College http//www.gwc.maricopa.
  edu/class/bio202/cyberheart/hartint0.htm

12
Coloring

• Handout - Human Heart - Front Removed / p. 166
• Choose dark colors for chambers and vessels
  carrying deoxygenated blood
• Choose bright colors for oxygenated blood
• Color both sides with corresponding colors (for
  example, rt atrium dark blue in all three)

13
List of things to color

• Right atrium
• left atrium
• right ventricle
• left ventricle
• myocardium
• epicardium
• endocardium
• oxygenated vessels
• deoxygenated vessels

14
Fetal Heart

• Foramen ovale
• hole between the right and left atrium
• Ductus arteriosus
• blood vessel between the pulmonary trunk and
  aorta
• Both of the above close when the first breath is
  taken
• change of pressure