Cardiopulmonary Systems Flashcards
Functions of the cardiovascular system
Delivers O2
Transport hormones,
Removes metabolic waste
Regulates body temp
Transports immune system cells
Capillaries
Connection between arteries and veins to allow for exchange of O2 nutrients and waste
How does the heart oxygante blood
Deoxygenated blood into the R atrium
Tricuspid valve R ventricle
Pulmonary artery (only artery in the body with deoxygenated blood)
Pulmonary Vein oxygenated blood to the L atrium
Mitral valve into L ventricle
Through aorta to body
Angiogenesis
Formation of vascular branches from existing blood vessels
Thought out life
Vasculogenesus
Formation of arteries and veins
Only during embryonic development
3 layers of the blood vessels
Tunica externa
(Outer connective tissue)
Tunica media
(Middle smooth muscle layer )
Tunica intima
(Inner endothelial layer )
Para sympathetic nervous system
Dec hr and causes vasodialation
Sympathetic nervous system
Inc HR and causes vasoconstriction
At what week does the heart develop after conception
3rd
At what week does the heart start to beat and pump blood
4th
At what week does the heart form the chambers ?
7th
What is a shunting system
Small passages for blood to travel through in order to bypass body parts that are not yet developed
Congenital heart disease
1% live births have Congenital heart disease
Leading non infectious cause of death
Cardio vascular in development in childhood
Left ventricle wall becomes twice as thick by adulthood
Heart size inc at similar rate as body weight inc
Myocytes is what type of muscle fibers ?
Cardiac
Cardiac muscle development
Inc Number of myofibril per cross sectional area
Inc force production
NO INC in number of Myocytes
What is the O2 lvl saturation in newborns
20g/100ml
What is the Hb levels in 3-6 month year Olds
10g/100 ml
Adult Hb levels
14-16 g/ mL
Fetal blood has more_____ and less _____ saturation
Hemoglobin, O2
In adulthood what might cause inc heart size
Fatty deposition
In what demographic would fatty deposition cause the heart to increase the most
Women 30-60s
Aging in the heart
Dec in number of myocytes but inc in size
Dec in number of pacemaker cells (slower Hr)
Myocardium becomes darker
Thickening and calcification of valves
Aging in the vessels
Thicker stiffer and less flexible
Inc resistance
Inc BP
Walls of the heart become thicker
Aging in blood
Dec blood volume
Dec RBC
Most white blood cells remain the same
Lymphocytes Dec in number
Adult heart disease
Leading cause of death
1 million heart attacks /yr
5 million adults with heart failure
Pulmonary system is divided into which type of zones
Conducting zone
Passageway for air to travel into and out of lungs
Respiratory zone
Located deep in the lungs
Medulla oblenagata and pons are known as what
respiratory center
True or false
Sympathetic nervous system controls bronchial dilation
True
True or false
Parasympathetic nervous system is controlls bronchial constriction
True
Tidal volume
Amount of air inhaled or exhaled at rest with each breath
Residual volume
Amount of air remaining in the lungs following expiration
Minute ventilation
Total volume of air inspired in one minute
When does pulmonary development happen in prenatal
4-8 weeks of gestation
Pulmonary development in infancy and children
Airways are smaller in children
Dec smooth muscles until 3-4 yrs
Dec alveolar elasticity
Inc risk of respiratory inf. Until 6-8
When are functional impairments evident in the pulmonary system
60s
What the changes due to aging that affect the pulmonary system
Stiffer thorax
Dec expansion
Dec strength and endurance of inspiratory muscles
INC WORK OF BREATHING
What way does your body compensate for the Dec efficency as you age in the pulmonary system
Inc in breathing rate
Blood pressure trend
Low to high
Resting HR trend
High to low
Adaptations to long term exercise
Inc HDL
Inc Cardiac Output/stroke volume
Inc Plasma volume
Dec resting HR
Dec BP
Dec LDL
Cardiac output is what
Stroke volume x HR
Minute ventilation
Tidal volume x respiratory rate
Maximal aerobic capacity
Maximal ability of an individuals body to transport and use oxygen for energy production