Chapter20BloodVesselsMarieb

Chapter20BloodVesselsMarieb - Key Concepts: Describe the...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Describe the histological similarities and differences of the blood vessels Explain the pattern and names of the major arteries and veins of the pulmonary & systemic circulations Describe the circulatory changes that occur at birth. Key Concepts : Developed by John Gallagher, MS, DVM
Background image of page 1

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

View Full DocumentRight Arrow Icon
Pulmonary Circuit: From the “Right Heart” to the Lungs Systemic Circuit: From the “Left Heart” to Everywhere Else 65 -70% in veins (= blood reservoir); lumen is larger than in corresponding arteries 30-35% in heart, arteries and capillaries N.B. The chambers pump the same VOLUME, approx 35 cc.
Background image of page 2
1. Tunica interna or intima (endothelium + c.t.) 2. Tunica media (muscle + c.t.) Much more smooth muscle in arteries 3. Tunica externa or adventitia (thick layer of c.t.) 4. Vasa vasorum (p 588 )
Background image of page 3

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

View Full DocumentRight Arrow Icon
Artery walls thicker (more muscle and elastic fibers), smaller lumen Additional: internal & external elastic membranes Artifacts when fixing slides: Arterial walls contract; endothelium cannot contract: pleated appearance Veins collapse in fixation
Background image of page 4
elastic arteries muscular arteries arterioles capillaries large vein medium-sized vein venules Arteries – ALWAYS carry blood away from heart Veins – ALWAYS return blood to heart, contain about 2/3 body's blood at any given time
Background image of page 5

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

View Full DocumentRight Arrow Icon
and their major branches Superior & inferior vena cava and their tributaries Largest, conducting arteries – lead directly from heart, subject to high pressures
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/16/2011 for the course BIOLOGY 101 taught by Professor Mr.wallace during the Fall '11 term at Montgomery College.

Page1 / 40

Chapter20BloodVesselsMarieb - Key Concepts: Describe the...

This preview shows document pages 1 - 7. Sign up to view the full document.

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