- ________________ capillaries have a wall where the endothelial cells fit very tightly together- least permeable- most common- skin and muscles- small intercellular cleft
- Who would most agree with Reverend Nathaniel Paul's exhortation to African Americans to "enter the field with a fixed determination to live and die in the holy cause" of abolition of slavery?
- When sphincters are open, blood flows through ______ capillaries
- When sphincters are closed, blood flows through the __________________-___________________ channel and bypasses true capillaries
- ____________ capillaries are ragged and have many holes/spaces for molecules to pass- most permeable- occurs in special locations (e.g. liver, bone marrow, spleen)- large intercellular cleft
- __________ arteries have large lumens and lots of elastin- largest
- Capillaries are JUST large enough to allow _________-______ passage of RBCs
- Who played the most important role in promoting educational reform?
- Molecules can pass through gaps or spaces in between the simple squamous cells of the endothelium called ?
- The regulation of blood flow at the capillaries only occurs in the mesentery, or _____________ region
- When the left ventricle contracts, the blood goes to the first portion of the aorta called the ?
- Veins are a low pressure conduit system and on their own, are unable to fight against __________ to reach the heart
- Molecules can just naturally __________ across endothelial cell membranes (O2, CO2)
- ________________ capillaries have large pores that increase permeability and occur in areas of active absorption or filtration- kidney, small intestine, etc- slightly bigger intercellular cleft
- What are the 2 mechanisms that help veins bring blood back to the heart?
- The metarteriole and thoroughfare channel together are called the ?
- Veins usually carry oxygen-_______ blood
- What is the one exception?- No fenestrations or clefts- Complete tight junctions- Glucose is "ushered" across the walls
- __________ _________ are predominantly found in the limbs and have a similar structure as the semilunar valves in the heart (two cups)
- Veins always _________ blood to the heart