10-20-14 Vascular Histo Flashcards
1
Q
The heart starts out as ____
A
two long tubes and folds in on itself
2
Q
Myocardium
A
The muscle
Contracts simultaneously
has conductive fibers
3
Q
Epicardium
A
The outer layer of the heart, reduces friction of heart against other surfaces
4
Q
3 Types of Cardiocytes
A
- Contractile
- Myoendocrine
- Nodal
5
Q
ANF (Atrial Natriuretic factor) does what
A
- Tells kidneys to
- Increase urine output (diuresis)
- Excrete more Na
- Decreases blood volume so heart doesn’t have to work as hard
