BLOOD VESSELS PATHOLOGY BLOOD VESSELS THE VASCULAR SYSTEM
BLOOD VESSELS PATHOLOGY
BLOOD VESSELS: THE VASCULAR SYSTEM v Taking blood from the heart to the tissues and back v. Arteries v. Arterioles v. Capillaries v. Venules v. Veins
The Vascular System
4
Differences Between Blood Vessel Types v. Walls of arteries are thickest v. Lumens of veins are larger than arteries v Skeletal muscle “milks” blood in veins toward the heart
CAPILLARIES v Only a single layer of endothelium and a basement membrane v Connect arterioles and Venules v Functional part of system v True capillaries begin at a precapillary sphincter which controls blood flow through the capillary 6
7
LYMPHATIC SYSTEM Lymphatic capillary Lymphatic duct Lymphatic vessels All organs have lymphatic vessels except ?
Pathology Congenital Anomalies HTN Arteriosclerosis Vasculitides ( inflammations) Aneurysms & Dissections Veins & Lymphatics Tumors
VASCULAR PATHOLOGY IN HTN Hypertension is associated with two forms of small blood vessel disease q q Hyaline Arteriolosclerosis Hyperplastic Arteriolosclerosis
Arteriosclerosis Arteriolosclerosis Monckeberg arteriosclerosis Atherosclerosis
ANEURYSMS Atherosclerotic aneurysms Aneurysms due to cystic media necrosis Berry aneurysms Syphilitic aneurysms Dissecting aneurysms Arteriovenous fistula ( aneurysms)
VASCULITIS
VEINS DISORDER Varicose vine Thrombophlebitis Superior/inferior Vena Cava Síndrome
TUMOR Benign tumor Malignant tumor
- Slides: 51