Cardiovascular System
What are the functions of the
circulatory system?
___________ -- nutrients,
proteins, cells
______________
Pathogens -- immunity
Damage -- clotting
______________
Heat control
Reservoir
http://cache.eb.com/eb/image?id=98328&rendTypeId=4
Cardiovascular System
What is blood?
Comprised of 2 major
categories…
________ 55%
(Plasma) &
_____________ 45%
___________ is
mostly H2O with
some suspended
proteins and other
solutes
____________consist
of RBC, WBC and TC
Cardiovascular System
Where does blood
come from?
_______ obtained via
diet and then osmosis
into blood stream.
_____________result
from the process of
making new blood
cells…
____________________
___________from
precursors (stem cells)
that reside & multiply in
red bone marrow.
Before birth =
Postpartum =
Cardiovascular System
Where do erythrocytes
come from?
____________ of the
yolk sac involves the
formation of
_______________ near
the yolk sac membrane.
These surround islands of
cells that become
“_____________”
These cells
(______________) are
the stem cells that give
rise to all other
hemopoietic stem cells
http://www.nature.com/emboj/journal/v17/n22/fig_tab/7591356f4.html
Figure 12.07
Cardiovascular System
Where does blood
come from?
Cardiovascular System
What’s important about
Erythrocytes?
Structure:
7.5 μm
Purpose:
O2 (____________________)
CO2 (___________________)
Life Span:
Contents:
Cardiovascular System
What’s important about
Erythrocytes?
Hemoglobin:
1 ____ binds with 1 heme
Cardiovascular System
What are the similarities between vessels?
3 Main layers
(or tunics)
1) __________
connective tissue
2) ____________
smooth muscle and
elastic fibers
3) ___________
connective tissue,
basement membrane
and endothelium
Cardiovascular System
What are the similarities between vessels?
Cardiovascular System
What’s unique about capillaries?
•
•Endothelial cells
continuous with
endocardium
•
•
Cardiovascular System
How is capillary flow regulated?
What function(s)
do these
sphincters
accomplish?
Figure 12.26
Figure 12.27
Figure 12.29
Figure 12.36
Figure 12.37
Cardiovascular System
What is the external
anatomy of the heart?
Cardiovascular System
What is the external anatomy of the heart?
Vessels associated with sulci…
_________________
(Right and Left)
__________________
(anterior and posterior)
Cardiovascular System
What is the external anatomy of the heart?
Vessels associated with sulci…
_______________________
return blood to heart via…
____________
To what chamber?
?
Cardiovascular System
What is the internal anatomy of the heart?
Right atrium
-3 entrances
*
*
*
Right ventricle
-
1
3
2
Cardiovascular System
What controls the timing and sequence of a heart beat?
__________“fires”
Impulse reaches
________, 0.1 sec delay
Impulse travels to
__________(Bundle of
His)
Impulse travels down
________________
Finally back up
_________________
Cardiovascular System
How is homeostasis of the heart achieved?
Receptors monitor
conditions including:
1) Changes in pressure
(_______________) in
major arteries work with
medulla oblongata
2) Changes in chemistry
(_____________) in medulla
oblongata (CO2) and major
arteries (O2)
Figure 12.52
Figure 12.19
Figure 12.03
What are the key events during the fetal period?
What are the key events during the fetal period?
What are the key events during the fetal period?
Figure 12.43
Figure 12.44
Figure 12.45
Figure 12.46