Cardiovascular Flashcards
Function of the cardiovascular
Transports cellular waste products to the appropriate organs for removal from the body
Average heart beat
60-100 bpm
Endocardium
Inner layer
Inner layer of heart
Endocardium
Myocardium
Thick middle layer
Middle layer of heart
Myocardium
Epicardium
Outer layer
Outer layer of heart
Epicardium
Double layer out of epicardium
Pericardium
Atrias
Two upper chambers of heart. Receiving chambers
Ventricles
Two lower chambers of the heart. The pumping chambers
Arteries
Carry blood away from the heart
Bright red
As they travel through the heart they get smaller
Muscular& elastic so that they can expand and contract with the pumping beat of the heart
Veins
Can only move toward the heart
Oxygen deprived
Much thinner walls causing them to collapse easier
Low pressure
Plasma
Composed of 55% of your blood &I s 90% water
Other 10% is proteins
Erythrocytes
Contain hemoglobin
Average of 35 trillion
Life span of 120 days
Leukocytes
Provide protection against pathogens
5 different types of leukocytes
Basophils, eosinophils, neutrophils, monocytes, lymphocytes
Platelets
Smallest of the three
Play a critical role in blood clotting
Anemia
Affects women w/ lower iron
Sickle cell anemia
Affects AA w/ crescent moon shaped RBC
Hemophilia
When your body cant clot
A can donate to
A, AB
A can receive from
A, O
B can donate to
B, AB
B can receive from
B, O
AB can donate to
AB
AB can receive from
A,B, AB, O
O can donate to
A,B,AB, O
O can revive from
O
P-PRwave
Atrial depolarization
QRS wave
Ventricular depolarization
T Wave
Ventricular repolarization
Cardiac Conduction system 1
Sinoatrial (SA) node “pacemaker”, where the electrical impulse begins. A wave of electricity travels through the SA node causing the atrias to contract
Cardiac Conduction system 2
Atrioventricle(AV) node is simulated
Cardiac Conduction system 3
AV node transfers the electrical wave to the atrioventricle bundle
Cardiac conduction system 4
The electrical signal travels down the bundle branches where the Purkinje fibers are stimulated causing ventricles to contract
P wave is
Contraction of the atrias
QRS wave is
The contraction of the ventricles. The atrias relax while ventricles contract
T Wave is
The relaxation of the ventricles
Pulse
Surge of blood caused by heart contraction, usually equal to heart rate
Normal pulse
60-100 bpm
Blood pressure
Measurement of the amount of pressure exerted against the walls of the blood vessels
Normal blood pressure
120/80
Systolic
When ventricles contract; highest
Diastolic
When ventricles relax. Lowest pressure
Hypertension
Blood pressure over 140/90
Hypotension
Blood pressure under 90/60
Upper respiratory tract
Nasal and oral passage, pharynx larynx
Lower respiratory tract
Trachea, bronchi, brochioles, alveoli
Nasal cavity
Air enters through 2 opening, nares
Divided down the center by nasal septum
Filters debris and bacteria from the air
Mucous secreted by mucous membranes
Epistaxis
Bloody nose
Pharynx
The throat
Used for both respiratory and digestive purposes
3 parts, nasopharynx, oropharynx, laryngopharnx
Larynx
Voice box, contains vocal chords
Epiglottis
Lid on trachea
Prevents food or liquid from going into lungs
Bradycardia
Slow heart rate
Cardiomegaly
Abnormal enlargement of the heart
Tachycardia
Fast heart rate
Phlebitis
Inflammation of veins
Ischemia
Reduced blood flow
Murmur
Sound of blood flowing through heart
Palpitations
Rapid, strong, irregular heart beat
Congenital septal defect
A heart defect due to an abnormal connection between the ventricles
Heart valve prolapse
Improper closure of valv
Heart valve stenosis
Narrowing of the valve in a large blood vessel