BIO203_Cardiovasc_4

BIO203_Cardiovasc_4 - Cardiovascular System Regulation The...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 The cardiovascular system responds to many and different challenges on regular, irregular, and rare occasions. Some examples are: – exercise • increased cardiovascular performance overall to support enhanced oxygenation of blood at the lungs and increased delivery to active tissues • selective redistribution of cardiac output (blood) in favor of active tissues – hemorrhage/dehydration • adaptive response(s) to restore blood pressure and volume • although they both involve a reduction in blood pressure and volume, hemorrhage (loss of blood—water, salts, cells) and dehydration (loss of water) are not equivalent challenges Cardiovascular System Regulation Cardiovascular Regulation: Exercise During exercise: • cardiac output increases • a disproportionately larger fraction of the cardiac output is delivered to active tissues such as skeletal muscle Cardiovascular Regulation: Hemorrhage • Hemorrhage results in: – loss of blood volume – decrease in blood pressure • The physiological response includes:
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/16/2011 for the course BIO 203 taught by Professor Loretz during the Fall '09 term at SUNY Buffalo.

Page1 / 4

BIO203_Cardiovasc_4 - Cardiovascular System Regulation The...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online