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Thank you,
Vicki Hughes
ROOTS:
Cardio = heart
A = without
Artero = artery
Athero = fibrous
Capillus = hair
Dia = through
Epi = on top of
Hemat/hemo = blood
Sclero = hardening
Vena = vein
Ventri – belly
Assignments:
OL CH 11 Reading Quiz
OL CH 11 Practice Test
CHAPTER 11: Cardiovascular System
The HEART
The HEART Quiz
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8
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Valve Repair
Two kinds of
replacement valves:
• mechanical valve
(man-made)
• biological valve
(animals like pigs)
http://www.sumanasinc.com/webcontent/animations/content/human_heart.html
BLOOD FLOW
Vena cava
Pulmonary
vein
Lt. Atrium
Rt. Atrium
Lungs
Bicuspid
valve
Tricuspid
valve
Pulmonary
artery
Lt.
Ventricle
BODY
Rt.
Ventricle
Pulmonary
valve
Aortic
valve
Aorta
(superior and
inferior)
http://bcs.whfreeman.com/thelifewire/content/chp49/49020.html
Heart Sounds
The opening and
closing of the
valves of the
heart make the
sounds we hear.
These sounds are
usually referred
to as “Lub” and
“Dup.”
“Lub” = AV valves closing (Tricuspid and Mitral)
“Dup” = Semilunar valves closing (Pulmonary and Aortic)
Sounds of the Heart http://www.mhhe.com/biosci/esp/2002_general/Esp/default.htm
http://depts.washington.edu/physdx/heart/demo.html
Purkinje fibers
http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_electrical.html
Electrocardiography
QRS Complex
Ventricular depolarization
(Atrial repolarization is hidden)
R
Ventricular repolarization
Atrial depolarization
T
P
Q
S
http://www.getbodysmart.com/ap/circulatorysystem/heart/electricalevents/ecg/tutorial.html
Lab: Dissection of
Sheep Heart
You will need:
Scissors
Probes (1 per person and 4 extras)
Blades
Yarn
Large needlepoint needle
PPE (personal protection equipment)
Pan
Paper towels
Paring knife
Sheep heart
http://www.youtube.com/watch?v=g4LafBUUZw&feature=related
Congestive Heart Failure
A healthy heart maintains a balance between cardiac output and
venous return.
Congestive Heart Failure (CHF) occurs when the output is
insufficient for the tissues needs.
> hormonal activities
> kidney function
http://www.youtube.com/watch?v=GnpLm9fzYxU&feature=related
Myocardial Infarction (heart
attack) occurs when the blood
supply to the heart is blocked by
an embolus.
http://www.youtube.com/watch?feature=endscreen&v=H_VsHmoRQKk&NR=1
Vascular System
Arteries carry oxygenated blood from the heart.
Veins carry deoxygenated blood to the heart.
Structure of Blood Vessels
3 layers:
Outer = connective tissue
Middle = smooth, elastic tissue
Inner = endothelial tissue
Capillaries = 1 layer allowing for diffusion of materials
Blood Pressure
Blood pressure is the force
that blood exerts against the
inner walls of blood vessels.
Although this force occurs
throughout the vascular system,
the term "blood pressure" most
commonly refers to pressure in
arteries supplied by branches
of the aorta.
The oscillating pressure in
these arteries produces a
"pulse."
Arterial Pulse = pressure wave produces by alternating
expansion and recoil of an artery.
Pg 338
http://www.medindia.n
et/animation/how-tocount-pulse.asp
Cardiovascular Checkup Activity
1.
2.
3.
4.
5.
6.
7.
8.
9.
Check your pulse.
Record your beats per minute.
Run (or march) in place for 60 seconds.
Check your pulse again.
Record your beats per minute.
Run for another 60 seconds.
Record your beats per minute.
Repeat three more times, running 60 seconds each time.
Graph your results.
http://www.sumanasinc.com/webcontent/animations/content/bloodpressure.html
Quick Lab: Using a sphygmomanometer
Taking your blood pressure
http://www.youtube.com/watch?v=BNSOQ7hYL5U&feature=related
Aortic Aneurysm = swelling of the aorta
Surgery: Aortic Aneurysm Repair
http://www.edheads.org/activities/aortic/index.shtml
Any Questions?