BIOL164Ch11NotesWin12

BIOL164Ch11NotesWin12 - 1 The Cardiovascular (Circulatory)...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: 1 The Cardiovascular (Circulatory) System Function : to transport nutrients, gases, hormones, wastes, immune cells, etc. throughout the body Is made up of the following parts : The fluid = blood , which is a fluid connective tissue (Ch. 11) The pump = the heart (Ch. 12) The pipes/tubes/hoses = blood vessels (Ch. 12) Figure 12.1 Ch. 11 Blood Is the river of life = a specialized fluid connective tissue that contains cells (called formed elements) suspended within a watery liquid matrix (= plasma) 2 The functions of blood 1. Transportation of: Gases, nutrients, hormones, metabolic wastes, heat, etc. 2. Protection , via: The restriction of fluid loss at injury sites Due to hemostasis and blood clotting Defense against toxins and pathogens By white blood cells and antibodies 3. Regulation of: The pH and ion composition of blood and interstitial (extracellular) fluid Blood contains buffers Free diffusion between the blood and interstitial fluid eliminates ion differences between them Body temperature Blood can absorb, redistribute, and/or dissipate body heat Characteristics of normal whole blood 1. Its temperature is ~ 38C (100.4F) 2. Viscosity = stickiness/cohesiveness/ thickness Blood is 5X more viscous than water Blood that has abnormally viscosity causes resistance to blood flow, making the heart work harder to pump it 3. pH = 7.35-7.45 (slightly alkaline) 4. Blood volume is primarily dependent on body size In an adult male: 5-6 liters In an adult female: 4-5 liters 3 The composition of whole blood Figure 11.1 Plasma Is similar to interstitial fluid, except plasma has a much (~ 5X) higher protein...
View Full Document

Page1 / 10

BIOL164Ch11NotesWin12 - 1 The Cardiovascular (Circulatory)...

This preview shows document pages 1 - 4. Sign up to view the full document.

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