Anatomy Questions
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Select all of the correct statements regarding the size, location, and orientation of the heart.The heart is approximately the same size as a person's fist.The heart is located between the lungs within the mediastinum of the thoracic cavity.The broad base of the heart rests on the diaphragm.The apex of the heart points toward the right shoulder.
Blood that nourishes the heart wall is provided by the right and left __________.coronary arteriescardiac veinscoronary sinusescarotid arteries
Select all of the ways that arteries and veins differ structurally.The tunica media is thicker in arteries compared to veins.Veins have larger lumens than arteries.Arteries have high-pressure valves that veins lack.The walls of veins are composed of two tunics, whereas the walls of arteries are composed of three tunics.
Vigorous exercise increases the demand for blood to supply active skeletal muscles. Select all of the factors that would help meet this demand.Increased stroke volumeIncreased heart rateDecreased sympathetic nervous system activityDecreased venous return
Starting with the pacemaker, impulses pass through the components of the intrinsic conduction system in which order?Sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, Purkinje fibersAtrioventricular (AV) node, atrioventricular (AV) bundle, Purkinje fibers, sinoatrial (SA) nodeSinoatrial ( SA) node, Purkinje fibers, atrioventricular (AV) node, atrioventricular (AV) bundleAtrioventricular (AV) node, sinoatrial (SA) node, Purkinje fibers, atrioventricular (AV) bundle
Which heart chamber has the thickest wall?Left ventricleLeft atriumRight ventricleRight atrium
At the arterial end of a capillary, blood pressure is __________ than osmotic pressure, and fluid flows __________ the capillary.more; out ofless; out ofless; intomore; into
What unique feature connects the anterior and posterior blood supplies of the brain, providing more than one route for blood to reach brain tissue in a given area?Circle of WillisHepatic portal circulationCoronary circulationDuctus arteriosus
The first heart sound (lub) results from closing the __________ valves.tricuspid and biscuspid (mitral)pulmonary and aortic semilunartricuspid and pulmonary semilunarbiscuspid (mitral) and aortic semilunar
Select all of the blood vessels that transport oxygen-rich blood.Pulmonary veinsAortaPulmonary arteriesSuperior vena cava
Assign the correct description to each heart chamber.1. right atrium 2. left atrium 3. right ventricle 4. left ventricle A. Receives oxygen rich blood from the lungs B. pumps oxygen poor blood to the lungs C. receives oxygen poor blood from the body D. Pumps oxygen rich blood to the body
What organs are considered to be "accessory" organs to the digestive tract?
What two body systems are involved to bring in oxygen and transporting it around the body?
ATP used in each myosin/actin cross-bridge
What does contraction of the detrusor muscle cause?
What is closely functional associated with the rectal venous plexus?
What connects the apex of the bladder and the umbilicus?
What is the neck of the bladder continuous with?
What is closely anatomically associated with the rectal venous plexus?
Where are the anastomoses between the portal and systemic veins?