Chapter 13
Average adult human has how many liters of blood
4-6
What is the most common blood type among Americans?
A
Pacemaker cells near the entrance of the superior vena cava?
SA node
Defends the body against parasites?
WBC
The pH value measures the levels of what?
acidity or alkalinity
Blood vessels that carry blood away from the heart are called what?
arteries
Carry blood away from the heart?
arteries
This is caused by the plaque in the arteries
artherosclerosis
Capillary beds are fed by what?
blood vessels or capillaries
Apex of the heart?
bottom of the heart
What color will vessels be if they have a high oxygen content?
bright red
Exchange of gases takes place where?
capillaries in the alveoli
Usually begins approximately 15 seconds after injury
coagulation
phagocytosis?
destroy bacteria
Septum?
divides the two cavities
Which WBC is effective in defending the body against parasites?
eosinophils
necrosis?
gray to black discoloration
artherosclerosis
hardening of the arteries
Condition that prevents healthy blood clotting?
hemophilia
What is the vessel that brings blood to the heart from the trunk and pelvic region?
inferior vena cava
What is the name of the structure that separates the lower chambers of the heart?
interventricular septum
leucopenia
low white blood count
Which cells are involved in the production of antibodies?
lymphocytes
Hg?
mercury
Tunica media?
middle layer of blood vessels
What is another name for the left atrioventricular valve?
mitral valve
Help repair injuries by attaching to the damaged site?
platelets
If the innermost wall of a vessel is damaged, the __ begin the repair by attaching to the damaged site?
platelets
Term for excessive RBC's?
polycythemia
What clotting protein, produced by the liver, begins the clotting process?
prothrombin
Which section of the heart receives blood from the right coronary artery?
right ventricle
The group of pacemaker cells near the entrance of the superior vena cava form the?
sa node
arterioles?
smallest arteries
hemostasis
stoppage of bleeding
Term for when the heart contracts
systole
ischemia
tissue injury due to decrease in blood flow
The innermost layer of the blood vessel?
tunica interna
O blood type?
universal donor
AB blood type
universal recipient
The nerve that decreases heart rate?
vagus
Which cranial nerve releases a neurotransmitter that can decrease the pulse and force of contraction?
vagus nerve
Carry blood toward the heart?
veins