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Circulatory System Part 1
Human Anatomy - Dr. Gardner
66
Anatomy
Not Applicable
11/24/2011

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Term
What specialty in medicine focuses on blood?
Definition
Hematology
Term
Which of the four primary tissue types is blood?
Definition
Connective Tissue
Term
When blood is centrifuged, three layers form. List them.
Definition
Plasma
Leukocytes and Platelets
Erythrocytes
Term
List the three major functions of blood.
Definition
Transportation
Regulation
Protection
Term
What does the blood transport?
Definition
Oxygen
Carbon Dioxide
Hormones
Nutrients
Waste Products
Term
What does the blood help regulate?
Definition
Body Temperature
pH
Fluid Levels
Term
How does the blood help protect the body?
Definition
Immunity
Clotting
Term
What are the major components of plasma?
Definition
Water
Proteins
Other Molecules
Term
List the formed elements of the blood.
Definition
Erythrocytes (Red Blood Cells)
Leukocytes (White Blood Cells)
Platelets
Term
What specialty in mecicine deals with the heart?
Definition
Cardiology
Term
What are the two circuits of the cardiovascular system?
Definition
Systemic Circuit
Pulmonary Circuit
Term
Which side of the heart pumps blood into the pulmonary circuit?
Definition
Right
Term
Wich side of the heart pumps blood into the systemic circuit?
Definition
Left
Term
Approximately how large is the heart?
Definition
The size of the person's clenched fist
Term
Where is the heart located?
Definition
About one third of it is left of the midline posterior to the sternum in the middle mediastinum. The other third is to the right of the midline.
Term
What is the base of the heart?
Definition
The posterosuperior surface, formed primarily by the left atrium
Term
What is the apex of the heart?
Definition
The inferior, conical end. It projects slightly aterioinferiorly towards the left side of the body
Term
What is the outer, tough, dense connective tissue layer of the sac surrounding the heart?
Definition
Fibrous Pericardium
Term
What fibrous, serous sac surrounds the heart?
Definition
Pericardium
Term
What is the inner portion of the sac surrounding the heart?
Definition
Serous Pericardium
Term
What layer of the serous pericardium covers the outside of the heart?
Definition
Visceral Layer
Term
What layer of the serous pericardium lines the inner surface of the fibrous pericardium?
Definition
Parietal Layer
Term
What is the space between the parietal and visceral layers of pericardium?
Definition
Pericardial Cavity
Term
List the three layers of the heart wall.
Definition
Endocardium
Myocardium
Epicardium
Term
What layer of the heart is a serous membrane?
Definition
Epicardium
Term
What layer of the heart is composed of cardiac muscle?
Definition
Myocardium
Term
What layer of the heart is composed of a single layer of simple squamous epithelium?
Definition
Endocardium
Term
How many chambers make up the heart?
Definition
4
Term
What are the two superior chambers of the heart that receive the blood returning from the body and the lungs?
Definition
Atria (Atrium)
Term
What are the two inferior chambers of the heart that pump blood to the lungs and the body?
Definition
Ventricles
Term
What relatively deep depression lies between the atria and the ventricles of the heart?
Definition
Coronary Sulcus
Term
What depressions lie between the ventricles of the heart?
Definition
Anterior and posterior interventricular sulci
Term
What structure composed of dense irregular connective tissue lies between the atria and ventricles of the heart?
Definition
Fibrous Skeleton
Term
The right atrium of the heart receives blood from what circuit?
Definition
Systemic Circuit
Term
What three vessels empty into the right atrium?
Definition
Superior Vena Cava
Inferior Vena Cava
Coronary Sinus
Term
What structure separates the right and left atria of the heart?
Definition
Interial Septum
Term
What separates the right atrium and right ventricle?
Definition
Right Atrioventricular Opening
Term
What prevents blood from returning to the right atrium as the right ventricle contracts?
Definition
Right Atrioventricular (AV) Valve (Tricuspid)
Term
What structure separates the right and left ventricles of the heart?
Definition
Interventricular Septum
Term
What nipple-like structures project from the wall of the right ventricle?
Definition
Papillary Muscles
Term
What structures anchor the tricuspid valve to the walls of the right ventricle and prevent it from everting into the right atrium?
Definition
Chordae Tendinae
Term
What valve prevents blood from returning to the right ventricle as that ventricle relaxes?
Definition
Pulmonary Valve
Term
What blood vessels carry blood from the lungs to the left atrium of the heart?
Definition
Pulmonary Veins
Term
What separates the left atrium from the left ventricle?
Definition
Left Atroventricular Opening
Term
What structure prevents blood from retyrning to the left atrium as the left ventricle contracts?
Definition
Left Atrioventricular (AV) Valve (Mitral or bicuspid valve)
Term
What structures anchor the mitral valve to the walls of the left ventricle and prevent it from everting into the left atrium?
Definition
Chordae Tendinae
Term
What nipple-like structures project from the walls of the left ventricle?
Definition
Papillary Muscles
Term
What structure prevents blood from returning from the left ventricle as that ventricle relaxes?
Definition
Aortic Valve
Term
What system of arteries, capillaries, and veins supplies the heart with blood?
Definition
Coronary Circulation
Term
What arteries arise from the ascending aorta to supply the heart with blood?
Definition
Coronary Arteries
Term
What brance of the right coronary artery supplies the right border of the heart?
Definition
Marginal Artery
Term
What branch of the right coronary artery lies within the posterior side of the heart?
Definition
Posterior Interventricular Arteries
Term
What branch of the left coronary artery lies in the anterior interventricular sulcus and supplies the anterior walls of the ventricles?
Definition
Anterior Interventricular Artery
Term
What branch of the left coronary atery lies within the atrioventricular sulcus and supplies the left atrium and left ventricle?
Definition
Circumflex Artery
Term
What is a communication between or coalecence of blood vessels?
Definition
Anastomoses
Term
What is circulation of blood extablished through enlargement of minor vessels and anastomosis of vessels with those of adjacent parts when a major vein or artery is functionally impaired (as by obstruction)?
Definition
Collateral Circulation
Term
What vein in the coronary circulation lies in the anterior interventricular sulcus and the left side of the AV sulcus?
Definition
Great Cardiac Vein
Term
What vein in the coronary circulation lies in the posterior interventricular sulcus?
Definition
Middle Cardiac Vein
Term
What vein in the coronary circulation runs along side the right marginal artery and lies in the right portion of the AV sulcus?
Definition
Small Cardiac Vein
Term
What large vein lies in the AV sulcus on the posterior side of he heart and drains into the right atrium?
Definition
Coronary Sinus
Term
What functional, motor division of the nervous system innervates the heart?
Definition
Autonomic Nervous System
Term
What division of the ANS increases the rate and strength of the heart beats?
Definition
Sympathetic Divison
Term
From what portion of the CNS does the sympathetic division innervating the heart emerge?
Definition
T1-T5
Term
What is the division the the ANS wich slows the heart rate?
Definition
Parasympathetic
Term
What nerve carrying parasympathetic impulses innervates the heart?
Definition
Vagus
Term
Of the three formed elements of the blood, which is not made up of cells?
Definition
Platelets
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