Heart - External View

1
Heart - External View

• 1. Caudal Vena Cava
• 2. Aorta
• 3. Pulmonary Trunk
• 4. Left Atria
• 5. Right Atria
• 6. Right Ventricle
• 7. Left Ventricle
• 8. Coronary Vein
• 9. Coronary Artery

2
Heart Internal View

• 1. Caudal Vena Cava
• 2. Right Atria
• 3. Tricuspid Valve
• 4. Right Ventricle
• 5. Papillary Muscle
• 6. Aorta
• 7. Pulmonary Trunk
• 8. Left Atria
• 9. Bicuspid Valve
• 10. Septum

3
Starting with the right atria list in order the
blood flow through the heart.
10
9
4
4
5
5
6
3
8
1
7
2
10
4
Heart Functioning

• Aorta
• Inferior vena cava
• Coronary artery
• Ductus Arteriosus
• Left atrium
• Left ventricle
• Pulmonary artery
• Pulmonary vein
• Right atrium
• Right ventricle

• Marks the beginning of systemic circulation
• Returns blood from the body
• Supplies the heart tissues with blood
• Used only in fetal life bypasses lungs
• Receives blood from lungs
• Pumps blood to body
• Carries blood to the lungs
• Carries blood from lungs to heart
• Receives blood from body
• Pumps blood to the lungs

5
Short Answer

• How is the fetal heart different from an adult
  heart?
• Ductus Arteriosus bypasses the lungs because the
  fetus depends on the mother for oxygen
• Why is the circulatory said to have double
  circulation?
• Blood passes through the heart twice on each
  circuit.

6
Vocabulary

• Systolic
• Diastolic
• Heart attack
• White cells
• Red blood cells
• Platelets
• Hypertension
• Atherosclerosis
• Pacemaker
• Stroke
• Cardiac Cycle

• Blood pressure during ventricular contraction
• Blood pressure between contractions
• Results of a clogged coronary artery
• Defends against invaders
• Erythrocytes
• Aids in blood clotting
• High blood pressure
• Hardening of arteries
• Sinoatrial node
• Results of a blood clot in the brain
• Alternation of contraction and relaxation of
  heart chambers

7
Types of Circulation

• Pulmonary
• Systemic
• Renal
• Portal
• Hepatic

• To the lungs
• To the body
• To the kidneys
• To the digestive system
• To the liver

8
Blood and Vessels

• Hemoglobin
• Plasma
• Capillaries
• Arteries
• Veins
• Universal Donor (O)
• Universal Receiver (AB)
• A,B,AB,O

• Oxygen carrier in blood
• Liquid part of blood
• Smallest vessels exchange of materials
• Carry blood away from heart
• Carry blood toward heart
• Can give blood to anyone
• Can get blood from anyone
• The four blood types

9
Two Closely Related Systems

• Circulatory System

• Lymphatic System

• Name 4 functions of the circulatory system.
• 1. Transport oxygen and carbon dioxide
• 2. Distribution of nutrients
• 3. Transport of wastes
• 4. Regulation of body temperature
• 5. Distribution of hormones
• 6. Protection from bacteria and viruses

• Name 3 functions of the lymphatic system.
• Remove excess fluid that leaks from capillaries
• Transport of fats from small intestine to blood
  stream
• Defends the body by exposing bacteria and viruses
  to white blood cells