Which of the following statements is true?
-Arteries are thinner and harder than veins.<=WRONG
-The left ventricle controls the heartbeat.<=YOUR ANSWER
-Veins carry blood away from the heart.<=WRONG
-Capillaries connect ateries and veins.<=WRONG
Ummmm... I think vein and left artery
The answer is 25%
Hemofilia is inherited by x-linked recessive pattern. Only woman could become recessive since woman has two x genes but man only has one.
The first generation is a carrier woman with normal man. The chance of their daughter to inherit the defect gene from her mother would be 50%. Then the daughter(angela) marries a normal man (George). The chance of Angela giving defect gene also 50%. The resultant chance would be: 50%*50%= 25%
Answer:
superior vena cava
Explanation:
Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart. The oxygen-poor blood enters the right atrium (RA), or the right upper chamber of the heart.
There will be several hundred at least. You will have red blood cells and different types of white blood cells mixed throughout. I don't know if I could give you an exact figure because it would be incredibly high considering that we are talking about cells that are microscopic. <span />
