Download Anatomy and Functioning of the Cardiovascular System: From the Heart to the Blood Vessels and more Quizzes Human Biology in PDF only on Docsity!
Anatomy of the Heart
Large Muscular organ with mostly cardiac tissue the MYOCARDIUM 2 Slides : tight&left separated by SEPTUM PEREICARDIUM SAC 2 Valve sets: SEMILUNAR & ATRIOVRNTICULAR 4 Chambers: 2ATRIA & 2 VENTRICLES TERM 2
Blood Flow Through the Heart
DEFINITION 2 Inferior &Superior Vena Cava (1) Dumps Blood into Right Right Ventricle(3) (Plumery Trunk) to 2 PLUMONARY ARTERIES(4) Leads to the lungs(5) blood becomes Oxygenated PULMONARY VEINS (6) Blood from the lungs back to left atrium(7) Left ventricle(8) Large&Muscular to pump blood into the orta(9)&the rest of the Body(10) Pumps back to each Vena Cava(10) TERM 3
VENIS &
VENULES
DEFINITION 3 VENULES: Small & receive blood from the capillaries VENULE & VEIN WALLS Have 3 Layers Thin Inner EPITHELIUM Less Amount of Smooth Muscle Layer Outer Connective Tissue VENIS Carry Blood Towards the Heart VENIS Carry Blood Against Gravity Have Valves & Keep Blood Flowing Towards the Heart TERM 4
CAPILARIES
DEFINITION 4 MICROSCOPIC VESSELS between arterioles & Venules One Layer OF EPITHELIAL TISSUE Beds of Vessels Exchange Body Cells=(CAPILLARY BEDS) Large Surface Area TERM 5
MAIN PATHWAY OR BLOOD IN THE BODY
DEFINITION 5 HEART-ARTERIES-ARTERIOLES-CAPILLARIES-VENULES- VENIS-BACK TO THE HEART....
ARTERIES &
ARTERIOLES
ARTERIES: Carry Blood Away From the Heart 3 Layers Thin Inner Epithelium(One of Four Main Tiss. Types) Thick SMOOTH LAYER(Main Tiss. Type) Outer Connective Tissue(Another Main Tiss. Type) ARTERIOLES: Small Arteries that Regulate Blood Pressure TERM 7
FUNCTIONS OF THE CARDIOVASCULAR
SYSTEM
DEFINITION 7 Transport Blood Generate Blood Pressure Regulate Blood Flow as Needed Exchange of Nutrients & Waste and the Capillaries TERM 8
CARDIOVASCULAR SYSTEM
DEFINITION 8 Brings Neutrons to Cells and gets rid of wastes. Includes Heart & Blood Vessels. Blood is Refreshed into the Kidneys, lungs, liver and intestine. LYMPHATIC VESSELS: Collect excess fluid surrounding tissues& returning it to the system. TERM 9
How Does The Heartbeat Occur
DEFINITION 9 During SYSTOLE: ATRIA contrast Together Followed by the Ventricles Contracting Together. Followed by DIASTOLE, a rest Phase, once the chamber relaxes. TERM 10
How Does the Structure of the Vessels and
Heart Match their Functions?
DEFINITION 10 Arteries are more muscular than veins to withstand higher pressure exerted on them. Left Ventricle More muscular than Right Ventricle Because It has to pump blood to the whole body. Veins have a thinner wall & a larger center to contain blood.
CARDIOVASCULAR PATHWAYS IN THE BODY
PULMONARY CIRCUIT: Right side of the heart brings blood from the body to the heart & the lungs. SYSTEMIC CIRCUIT: Left side of the heart that brings blood to the entire boy to deliver nutrients & rid it of wastes. TERM 17
THE HEART'S BLOOD SUPPLY: CORONARY
CIRCULATION
DEFINITION 17 Small coronary arteries that supply the heart. They are separate from the systemic & pulmonary pathways of the body. TERM 18
CAPILLARY ECHANGES
DEFINITION 18 Lymphatic Capillary beds lie alongside capillary beds. Lymphatic Capillaries Take up excess fluid and become LYMPH. Lymph returns to the Cardiovascular Veins in the chest. Precapillary Sphincters shut down Blood Capillaries & blood flows through the shunt. TERM 19
CARDIOVASCULAR DISEASE (CDV)
DEFINITION 19 The most common cause of death in the Western World. TERM 20
DISORDERS OF THE BLOOD VESSELS
DEFINITION 20 STOKE ATHEROSCLEROSIS HYPERTENSION/HIGH BLOOD PRESSURE HEART ATTACK ANEURYSM
HYPERTENSION
High Blood Pressure results when Blood Moves through Vessels and happens at a high rate than normal often due to plaque. Silent killer because of few symptoms Leeds to heart attack, stoke, or Kidney failure TERM 22
ATHEROSCLEROSIS
DEFINITION 22 Build up of PLAQUE in Blood Vessels. Plaque that's stationary & is called THROMBUS & an EMBOLUS when detaching & moves to distant sites Associated with Stoke, Heart Attack, & Aneurysm TERM 23
STOKE CARDIOVASCULAR ACCIDENT (CVA)
DEFINITION 23 Occurs when a Cranial Artery is Blocked or Burst. Part of the Brain Dies because of lack of Oxygen SYMPTOMS Face or Hand Numbness Difficulty Speaking Inability to see in one eye TERM 24
HEART ATTACK MYOCARDIAL
INFRACTION(M)
DEFINITION 24 Part of the Heart Dies Due to Lack of Oxygen Beings with ANGINA PECTORIS: Pain that can radiant down the left arm due to Blockage of a Coronary Artery TERM 25
ANEURYSM
DEFINITION 25 ATHEROSCLEROSIS & HYPERTENSION: Can weaken a Vessel & Cause Ballooning. Ballooning of a Blood Vessel Commonly Affected: Abdominal Artery or Arteries Leading to the Brain
