Chapter 16-17 Flashcards
What is the name given to the neurons that monitor carbon dioxide levels in the blood and are located in the carotid and aortic arteries
Chemoreceptors
A_______ blood vessel with a _______ diameter would have the greatest resistance to blood flow
Long, small
Pulmonary circulation goes from the ______ _______ to the ______ ______
Right ventricle, left atrium
Which blood vessels contain blood with the highest oxygen content
Pulmonary veins
From which major blood vessel do all systemic blood vessels branch
Aorta
Which circulatory path carries blood rich in substances absorbed from the gastrointestinal tract
Hepatic portal
Arteries or Veins closest to or farthest from the heart have the lowest blood pressure
Veins, closest to
Vascular resistance is primarily to due which factor
Friction between blood-walls
When the left ventricle contracts, what term is given to the pressure in arteries that is generated
Systolic
In fetal circulation, which structure connects the fetal pulmonary trunk to the aorta, allowing much blood to bypass the lungs
Ductus Arteriosus
Simulation of the _____ would cause the heart rate to decrease
Vagus nerve
In the fetus, what is the opening that allows blood to pass directly from the right atrium to the left atrium
For amen Ovale
With aging, cardiac muscle fibers ___ in size
Decrease
Defenses of the body that are present at birth are referred to as ____ immunity
Innate
The fetal circulation differs fro, the adult circulation because of which organ system that is non functional
Respiratory
