BIO 169 Exam 1 Questions and
Answers
Which of the following are important sources of resistance to blood flow?
✓ ~~~All of the Above
A _________ allows an organ to recieve blood from more then one arterial source or
drain blood into more then one vein.
✓ ~~~vascular anastomoses
Arteries can be best defined as
✓ ~~~vessels that carry blood away from the heart.
A decrease in hematocrit will result in a decrease in ____________ resulting in a
decrease in blood pressure.
✓ ~~~blood viscosity
The systolic pressure
✓ ~~~all of the above
Unlike most organs when an area of the lungs has a low oxygen content, perhaps
because of disease or damage to the tissue, the blood vessels in that area
✓ ~~~undergo vasoconstriction so less blood will reach those tissues.
Vasodilation
, ✓ ~~~is an increase in the diameter of a blood vessel.
Which of the following is a correct statement concerning continuous capillaries?
✓ ~~~constitute the blood-brain barrier
What is the relationship between the velocity blood flows through vessels and the
cross-sectional area of the vessels?
✓ ~~~The higher the cross sectional area the slower the blood flows, like in capillaries.
Which blood vessel is made of only one tissue layer, the tunica interna?
✓ ~~~capillaries
Which of the following can result if renin is released by the kidneys?
✓ ~~~All of the above resulting in a raise in blood pressure
Which of the following is a true statement concerning the impact of alcohol on the
body?
✓ ~~~Alcohol inhibits ADH release causing vasodilation resulting in a flushed appearance
Which of the following factors would not increase resistance?
✓ ~~~An increase in the diameter of the blood vessel.
Which of the following hormones is produced by the heart and causes blood
pressure to decline?
✓ ~~~atrial natriuretic peptide
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MASTER01. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
