NUR 235 Exam 1 Questions and
Answers|Latest Update
Identify the anatomy of the cardiovascular system. Heart:
The heart is a muscular organ located in the chest, slightly left of the midline. It acts as the
central pump of the cardiovascular system, propelling blood throughout the body.
The heart consists of four chambers: two atria (right and left) and two ventricles (right and left),
which work together to ensure blood flow.
Blood Vessels:
Arteries: These carry oxygenated blood away from the heart to various parts of the body. The
largest artery is the aorta, which branches into smaller arteries.
Veins: Veins return deoxygenated blood from the body's tissues back to the heart. The superior
and inferior vena cava are the largest veins, draining blood into the right atrium.
Capillaries: Capillaries are tiny, thin-walled vessels that connect arteries to veins. They facilitate
the exchange of oxygen, nutrients, and waste products between the bloodstream and body
tissues.
Blood:
, Blood is a fluid connective tissue composed of plasma (a liquid component) and formed
elements, including red blood cells (erythrocytes), white blood cells (leukocytes), and platelets
(thrombocytes).
Red blood cells are responsible for carrying oxygen, while white blood cells are involved in
immune responses. Platelets play a crucial role in blood clotting.
Coronary Arteries:
The coronary arteries supply oxygenated blood to the heart muscle (myocardium) itself. The left
coronary artery branches into the left anterior descending (LAD) and circumflex arteries, while
the right coronary artery supplies the right side of the heart.
Atrioventricular (AV) Valves:
These valves separate the atria from the ventricles in the heart. The tricuspid valve is on the right
side, and the bicuspid or mitral valve is on the left side.
Semilunar Valves:
These valves, including the aortic valve and pulmonary valve, separate the ventricles from the
major arteries. T
Answers|Latest Update
Identify the anatomy of the cardiovascular system. Heart:
The heart is a muscular organ located in the chest, slightly left of the midline. It acts as the
central pump of the cardiovascular system, propelling blood throughout the body.
The heart consists of four chambers: two atria (right and left) and two ventricles (right and left),
which work together to ensure blood flow.
Blood Vessels:
Arteries: These carry oxygenated blood away from the heart to various parts of the body. The
largest artery is the aorta, which branches into smaller arteries.
Veins: Veins return deoxygenated blood from the body's tissues back to the heart. The superior
and inferior vena cava are the largest veins, draining blood into the right atrium.
Capillaries: Capillaries are tiny, thin-walled vessels that connect arteries to veins. They facilitate
the exchange of oxygen, nutrients, and waste products between the bloodstream and body
tissues.
Blood:
, Blood is a fluid connective tissue composed of plasma (a liquid component) and formed
elements, including red blood cells (erythrocytes), white blood cells (leukocytes), and platelets
(thrombocytes).
Red blood cells are responsible for carrying oxygen, while white blood cells are involved in
immune responses. Platelets play a crucial role in blood clotting.
Coronary Arteries:
The coronary arteries supply oxygenated blood to the heart muscle (myocardium) itself. The left
coronary artery branches into the left anterior descending (LAD) and circumflex arteries, while
the right coronary artery supplies the right side of the heart.
Atrioventricular (AV) Valves:
These valves separate the atria from the ventricles in the heart. The tricuspid valve is on the right
side, and the bicuspid or mitral valve is on the left side.
Semilunar Valves:
These valves, including the aortic valve and pulmonary valve, separate the ventricles from the
major arteries. T
