anatomy ch 10-11 journal. what is the composition of blood? plasma 55% (mostly water) formed...
TRANSCRIPT
Anatomy Ch 10-11 Journal
What is the composition of blood?
• Plasma 55% (mostly water)
• Formed elements 45%– Erythrocytes (red)– Leukocytes (white)– Platelets (clotting)
What color is blood?
– Oxygen-rich blood is scarlet red– Oxygen-poor blood is dull red
What are the four main blood types?
• A
• B
• AB
• O
What is an embolus?
• A thrombus that breaks away and floats freely in the bloodstream that can later clog vessels in critical areas such as the brain.
What is RhoGAM?
• The immune serum used to prevent maternal sensitization to Rh antigens.
Describe WBCs (leukocytes):
• they use diapedesis to move in and out of blood vessels
• they locate areas of tissue damage through chemotaxis
• they move by ameboid motion
• they account for less than 1 percent of total blood volume
Define systole and diastole.
• Systole: ventricle contraction
• Diastole: ventricle relaxation
What structure divides the left from the right ventricle?
interventricular septum
Describe lub-dup.
• the first sound is longer and louder and is caused by closure of the AV valves; the second sound is shorter and sharper and is caused by closure of the semilunar valves
Cardiac muscle is enclosed by a double sac of serous membrane
known as the ___________.
• pericardium
What is stroke volume?
• The volume of blood pumped out by each ventricle with each beat of the heart.
What artery is behind the knee?
• Popliteal
The path of blood flow within the systemic vascular system is:
• arteries, arterioles, capillary beds, venules, veins
What lifestyle factors contribute to heart disease.
• Emotional stress
• Smoking
• Obesity
• High-fat/cholesterol diet
• Lack of exercise
• HOLES