CH 22: The CH 22: The Cardiovascular System: Cardiovascular System: Vessels & Circulation Vessels & Circulation Describe the histological similarities Describe the histological similarities and differences of the blood vessels and differences of the blood vessels Explain the pattern and names of the Explain the pattern and names of the major arteries and veins of the major arteries and veins of the pulmonary & systemic circulations pulmonary & systemic circulations Describe the circulatory changes that Describe the circulatory changes that occur at birth, and the ones occurring occur at birth, and the ones occurring with exercise. with exercise. Keyconcepts:
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CH 22: The Cardiovascular System: Vessels & Circulation Describe the histological similarities and differences of the blood vessels Explain the pattern.
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CH 22: The Cardiovascular CH 22: The Cardiovascular System:System:
Vessels & CirculationVessels & Circulation
Describe the histological similarities and Describe the histological similarities and differences of the blood vesselsdifferences of the blood vessels
Explain the pattern and names of the major arteries Explain the pattern and names of the major arteries and veins of the pulmonary & systemic circulationsand veins of the pulmonary & systemic circulations
Describe the circulatory changes that occur at Describe the circulatory changes that occur at birth, and the ones occurring with exercise.birth, and the ones occurring with exercise.
Right ventricle into pulmonary trunk to pulmonary arteries to lungs
Return by way of 4 pulmonary veins to left atrium
Pulmonary Circuit
Brachiocephalictrunk1
Left commoncarotid
Left subclavian3
2
Aortic ArchAortic Arch
Systemic Circuit
Circle of Willis = Circle of Willis = Cerebral Arterial CircleCerebral Arterial Circle
= Ring of vessels = Ring of vessels surrounding pituitary surrounding pituitary gland - supplies cerebrum gland - supplies cerebrum and cerebellumand cerebellum
Brain can receive blood Brain can receive blood from carotids or from carotids or vertebrals vertebrals (significance?)(significance?)
v
ic
Fig 22.13
Circle of Willis
Descending aorta• thoracic aorta• abdominal aorta
Abdominal aorta
Common iliac
External iliac
Femoral
Descending Aorta Descending Aorta - Thoracic Area- Thoracic Area
Bronchial arteries - supply Bronchial arteries - supply bronchi and lungsbronchi and lungs