MCAT Biology Question — Endothelial Cells
- Aug 27, 2014
- MCAT Question of the Day
An inner layer of endothelial cells is found in:
a) I only
b) I and II
c) II and III
d) I, II, and III
The innermost layer of all blood vessels is made of endothelial cells. Choice d) is correct. Other characteristics commonly tested on the MCAT include: valves are found in veins only, nutrients diffuse in and out of capillaries only, a smooth muscle layer is found in arteries and veins but not capillaries.
a) I only, incorrect, Veins and capillaries both have endothelial cells.
b) I and II, incorrect, Capillaries have endothelial cells.
c) II and III, incorrect, Arteries have endothelial cells.
d) I, II, and III, correct, Endothelial cells are found in the innermost layer of all blood vessels.
Want more MCAT practice?
We’ve got options for every schedule and learning style!
From the best online MCAT course created by top instructors with 524+ MCAT scores to the most representative full-length practice exams and private tutoring, we can custom tailor your MCAT prep to your goals!
Not sure which option is right for you? Schedule a free MCAT consultation with an MCAT expert using the form below. No obligation, just expert advice.
Search the Blog
Free ConsultationSchedule Now
Free MCAT Practice AccountNeed great MCAT practice?
Get the most representative MCAT practice possible when you sign up for our free MCAT Account, which includes a half-length diagnostic exam and one of our full-length MCAT practice exams.Learn More