chapt05LectureOutlines

chapt05LectureOutlines - Chapter 5 Cardiovascular System:...

Info iconThis preview shows pages 1–20. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chapter 5 Cardiovascular System: Heart and Blood Vessels ( “heart / vessel system” )
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Outline Overview of the Cardiovascular System The Types of Blood Vessels The Heart Is a Double Pump Features of the Cardiovascular System Two Cardiovascular Pathways Exchange at the Capillaries Cardiovascular Disorders Lymphatic System
Background image of page 2
3 Overview of the Cardiovascular System The entire purpose of circulation of blood through the body is exchange of materials that all cells must have to survive! Involves the interaction b/w the Cardiovascular , Respiratory , Digestive , and Urinary Systems . The Lymphatic System assists the Cardiovascular System in this exchange process.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Functions of the Cardiovascular System 1. Contractions of the heart generates blood pressure, which moves blood through blood vessels. 2. Blood vessels transport blood, which moves from the heart into arteries , capillaries , and veins , before returning to the heart. 3. Exchanges at the capillaries (smallest vessels) refreshes blood and then tissue fluid ( interstitial fluid ). 4. The heart and blood vessels regulate blood flow, according to the needs of the body.
Background image of page 4
5 The Types of Blood Vessels In humans, the right side of the heart pumps blood to the lungs , and the left side pumps blood to the tissues . Three types of blood vessels. Arteries . Capillaries . Veins .
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 The Arteries A rteries carry blood away from the heart to the capillaries. Arterioles are small arteries visible to the naked eye. The greater the number of dilated vessels, the lower the blood pressure.
Background image of page 6
7 The Capillaries Capillaries permit exchange of material with tissues. Arterioles branch into capillaries. Capillary beds are present in all regions of the body. Relative constancy of tissue fluid is dependent upon capillary exchange.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 Capillary Bed Anatomy
Background image of page 8
9 The Veins Veins return blood from the capillaries to the heart. Venules are small veins that drain blood from the capillaries and then join to form a vein. Veins often have valves to prevent backward blood flow.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 Blood Vessels
Background image of page 10
11 The Heart Is a Double Pump Major portion of the heart, myo cardium , consists largely of cardiac muscle. Humans have a four chambered heart. Two artria ( auricles ) and two ventricles . Septum separates heart into halves. Heart has four valves. Atrioventricular (AV) valves between atria and ventricles. Semilunar valves between ventricles and attached vessels.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 External Heart Anatomy
Background image of page 12
13 0013
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
14
Background image of page 14
15 0009
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
16 0014
Background image of page 16
17 0012
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
18 Heart Anatomy “Links” http://info.med.yale.edu/intmed/cardio/imaging/ http://info.med.yale.edu/intmed/cardio/imaging/anato
Background image of page 18
19 Passage of Blood through the Heart Oxygen-poor blood never