6.2 The Transport System Flashcards
What do you coronary arteries do?
Coronary artery supply heart muscles with oxygen and nutrients
Explain the action of the heart in terms of collecting by blood, pumping blood, and opening and closing of the valves.
Red blood cells from body that lack of oxygen are moved into the Sapir vena cava into the right atrium which Calexico I’m a blonde and then contracts through the tricuspid valve into the right ventricle which again collects volume of blood and contracts contracts this closes the tricuspid valve which prevents backflow and increases the blood pressure therefore the blood leaves through the to the semi lunar valve into the pulmonary artery that black thing goes through artillery through artel uprise and capillary beds which pick up oxygen from lungs in exchange for co 2
Xoxygenated blood goes through pulmonary vein into the left atrium which collects and contracts into the bicuspid valve in the left ventricle which collects and contracts contracts which closes the bicuspid valve increases the blood pressure which pushes the blood to open the semilunar valve into the are aorta scratches into the arteries to the body
Outlined the control of the heart be in terms of myogenic muscle contraction the role of the pacemaker, nerves, the medulla of the brain and adrenaline
Heart made of cardiac muscles contract and relax without nervous system therefore due to my agenic muscle contraction. Need to be controlled to keep the timing of contraction unified and useful. The SA node is a mass of tissue in the right atrium ask the pacemaker of the heart it sends electric signals to initiate a contradiction of brown atria. The AV node different mass of tissue in the right atrium contracts the ventricles it receives the signal from the essay weights your point Wednesday second and send a different electric signal. Both HE in the latter both ventricles contract together.
During exercise to increase heart level meant to look chemically senses increase in co2, send signal through cranial nerve to the SA node which increases the heart rate doesn’t changedoesn’t change mechanism the party just the timing. When you stop exercising and CO2 levels decrease men do listen signals to the Vegas nerve to the SA node which causes it to become normal
Adrenaline during high stress excitement adrenaline glands secrete a gentleman to blood stream which causes the SA node to fire more frequently and increases the heart rate
Explain the relationship between the structure and function of arteries, capillaries, & veins
arteries three layers, thick, carry blood away from heart, to regulate increase pressure from blood. Veins: three layers, thickest of Midler is very thin, carries blood to the heart, then to decrease pressure which allows affect an exchange of chemicals, big diameter to slow the movement and valves to go against gravity blood moves up.
capillaries : one layer, gas yet gas exchange, thin walk 1 cell at a time = effective gas exchange
State what was composed of
Plasma, erythrocytes, leucocytes (phagocytes and lymphocytes] and platelets
What is transported by blood?
Nutrients, oxygen, carbon dioxide, hormones, antibodies, and heat is transported through blood
John and label a diagram of the heart showing the four chambers, associate blood vessels, valves and the route of blood through the heart
Superior and inferior vena cava, write a champ, tricuspid, left atrium, right semilunar valve, pulmonary artery, pulmonary vein, left atrium, bicuspid, left ventricle, left semilunar valve, aorta.
- don’t forget valves !!
