Human Anatomy Circulatory System Quiz

The chamber of the heart that receives oxygenated blood from the lungs and pumps it to the body.

The valve that separates the left atrium from the left ventricle, allowing blood to flow from the atrium to the ventricle and preventing backflow.

The chambers of the heart responsible for pumping blood out to the lungs and the rest of the body.

The muscular wall that separates the right and left ventricles of the heart.

Muscular ridges found on the inner walls of the ventricles that help to increase the efficiency of the pumping action.

Muscle projections that extend from the trabeculae carnae and help anchor the chordae tendinae.

Tendinous strands that attach to the papillary muscles and the cusps of the heart valves, preventing them from prolapsing back into the atrium during ventricular contraction.

Valves that guard the openings of the pulmonary trunk and the aorta, preventing backflow of blood into the ventricles.

The right atrium has two distinct areas: a smooth posterior part derived from the sinus venosus and a roughened anterior part with trabeculated muscle fibers known as pectinate muscles.

The right auricle is the ear-shaped extension of the right atrium and contains pectinate muscles.

The crista terminalis is a prominent vertical ridge that separates the smooth and rough areas of the right atrium.

The interatrial septum is the wall between the right and left atria.

The fossa ovalis is a depression in the interatrial septum that marks the site of the fetal foramen ovale.

The coronary sinus opens near the interatrial septum, close to the opening of the inferior vena cava.

The right atrium connects to the right ventricle via the tricuspid valve, which has three cusps.

The natural pacemaker of the heart, located in the right atrium. It generates electrical impulses that initiate the heartbeat.

A group of specialized cardiac muscle fibers that conduct electrical impulses from the atria to the ventricles. It ensures coordinated contraction of the heart chambers.

A bundle of specialized cardiac muscle fibers that conducts electrical impulses from the AV node to the ventricles, facilitating synchronized contraction.

The effect of the sympathetic nervous system on the heart, resulting in increased heart rate and force of contraction.

The effect of the parasympathetic nervous system on the heart, resulting in decreased heart rate and force of contraction.

A condition where the interatrial septum fails to close during fetal development, leading to a mixing of blood between the atria.

A condition where a blockage in a coronary artery restricts blood flow to the heart muscle, causing tissue damage and potentially leading to a heart attack. Also known as myocardial infarction.

The main artery that carries blood from the heart to the lungs.

The main artery that carries blood from the heart to the rest of the body.

The section of the aorta that rises from the heart.

The section of the aorta that curves over the heart.

The section of the aorta that descends from the aortic arch.

The arteries that carry blood to the head and neck.

The arteries that carry blood to the arms and shoulders.

The artery that carries blood to the brain.

The arteries that carry blood to the chest wall.

The arteries that carry blood to the abdominal organs.

These arteries supply the adrenal glands, which are located just above the kidneys.

These arteries branch off the aorta at the L1-L2 vertebral level and deliver blood to the kidneys. They also have branches that supply the adrenal glands.

These arteries arise from the aorta below the renal arteries and supply the ovaries in females or the testes in males.

These arteries branch out from the aorta and supply the abdominal wall.

These arteries are located at the pelvic brim and divide into external and internal iliac arteries.

These arteries originate from the common iliac arteries and supply the lower limbs. They continue as femoral arteries.

These arteries originate from the common iliac arteries and supply structures within the pelvis. Some branches also supply parts of the lower limb.

Veins carry blood back to the heart and have thinner walls and wider lumens than arteries. Some peripheral veins have valves to ensure blood flows in the correct direction.

A large vein that carries deoxygenated blood from the upper body to the heart.

A large vein that carries deoxygenated blood from the lower body to the heart.

Veins that drain blood from the head and neck.

Veins that drain blood from the upper limbs.

Veins formed by the union of the internal jugular and subclavian veins, draining blood from the head, neck, and upper limbs.

A vein that runs along the right side of the thoracic vertebral column, draining blood from the intercostal spaces and back.

Veins that drain blood from the pelvic and lower limb structures.

Veins that drain blood from the lower limbs.