Questions to go over for Ch. 10 Checklist Flashcards
How are the right and left ventricles distinct?
Right Ventricle: deoxygenated blood, pulmonary arteries, lungs (oxygenated)
Left Ventricle: aorta, arteries, body
What is the electrical conductivity through the heart?
It goes from the brain, sinoatrial node, atrioventricular node, purkinjie fibers, muscle contraction
Where are the Purkinjie fibers, atrioventricular and sinoatrial nodes found and what are there characteristics?
- The atrioventricular nodes are found in the upper right atrium
The atrioventricular nodes are also a conductor.
The atrioventricular nodes characteristic: They pass nerve impulses and the brain send a warning for this action. It sets the pace.
The sinoatrial nodes are a pacemaker and they are linked to the septum.
Purkinjie fibers: right and left ventricles septum.
They carry nerve impulses from the atrioventricular nodes to the bottom tip of the heart.
What is the muscular contractile programs connected with each structure?
It is when the ventricular muscles which cause it to contract or relax and then what proceeds is the diastole and systole.
What is peculiar about the Sinoatrial node?
The brain sends a warning message to the Sinoatrial node.
What is Stroke Volume?
Amount of blood which pumps with each beat of the heart.
How does the body grow blood pressure?
Throgh exercise. When someone is stressed it can increase the heart rate and the blood pressure. It increases the blood pressure through the Sinoatrial node. First of all the brain sends a message to the Sinoatrial so then the SInoatrial node passes nerve impulses and then what happens is that purkinjie fibers carry that so it can go into the systole or diastole depending if it is high or low.
2 other methods of how the body increases blood pressure is through cardiac output. When the cardiac output increases the blood pressure will increase. Another way to increase the blood pressure is through the arteriolar resistance. Arteriolar resistance is when the diameter of the arteriole is directed by smooth muscles.
How does the body reduce blood pressure?
It reduces blood pressure through arteriolar dilation. Arteriolar dilation grows the outflow of blood from the artery.
Sympathetic - accelerator nerve, stress conditions, raises the heart rate
Parasympathetic - vagus nerve, normal conditions, lowers heart rate
What are all the differences exercise makes to the circulatory system? Is blood flow managed fairly throughout the body?
It increases the heart rate and the blood pressure so blood is flowing more in the body.
No, it isn’t since exercise blood is flowing faster than normal and that it will decrease the blood pressure and the heart rate.
How does the body carry out thermoregulation?
Well what occurs it that the body temperature decreases when you sweat and that causes cooling. When the outside temperature is cooler your body tries to grow the temperature by goosebumps. The essence of goosebumps is to assist by trapping heat inside your body.
What issues will the baby encounter if the baby is born with a hole in their septum?
The left and right ventricles won’t divide. The blood will have to work harder to get blood.
