Heart, veins
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| show | Depol authorythmic cells, spreads to non-autorythmic & opens
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| what is involved in Circulation? | show 🗑
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| what is Mid-to-late diastole? | show 🗑
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| show | Change in heart wall; dialated cardiomyopathy- stretches out, bldy sitting around
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| show | -35(arteriole end)-15(venous end)
-capillaries will burst and push nutrients out
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| Factors that affect resistance? | show 🗑
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| show | -calcium
-digitalis
-epinephrine
-glucagon
-thyroxine
Increase contractility, increase of force of heart
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| ABC of heart health | show 🗑
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| show | From arterial to venous
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| Other heart rate modifiers | show 🗑
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| show | Cornea & lens
Ligaments & tendons
Epithelium
Cartilage
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| Types of bld vessels | show 🗑
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| show | Kidnerys
retina
spleen
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| show | Mm contaction in heart by Ca2+
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| show | -Porous, small intestine, kidney, endocrine organs, some endothelial have fenestration
-More permeable to fluid and solutes
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| Tunica Media | show 🗑
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| show | Most common
Don't stretch/ tissues die off
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| Mitochondria create? | show 🗑
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| Arrythmias | show 🗑
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| Arteries do what? | show 🗑
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| show | -Tunica Intima
-Pericytes- help support wall
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| show | Tunica intima only
length-60,000
width-10 micrometers
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| Heart failure classification | show 🗑
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| Veins characteristics | show 🗑
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| show | Inflamation of the heart; viruses cause L ventricle to fail
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| Factors that affect EDV and ESV | show 🗑
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| show | Exchange vessels
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| Vascular anastomosis parts developed best for it? | show 🗑
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| show | slow and intermittent
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| show | largest arteries in heart, closer to the heart, do not vasodialate or vasoconstrict
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| Capillaries job and position? | show 🗑
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| Sinusoidal | show 🗑
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| Types of veins | show 🗑
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| show | Futher away from heart
Deliver bld to specific body organs- kidney gonads
Thickest tunica media
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| show | Continious
Fenestrated
Sinusoidal
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| Ventricular systole | show 🗑
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| FAulty heart valves | show 🗑
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| show | Heart beats on its own, ANS can modify HR and force of contraction
-Sympathetic-Neurotransmitter Norapanephrin
-Parasympathetic-Neurotransmitter acetacholamine
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| Cardiac mm contraction- autorythmic cells | show 🗑
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| Venous adaptation for overcoming gravity | show 🗑
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| Intercalated disks | show 🗑
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| show | systole- time contraction of ventricles
diastole- time relaxation of ventricles
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| show | Tunica intima, media and externa
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| Circulation formula | show 🗑
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| layers of the tunica intima? | show 🗑
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| show | SV=EDV-ESV
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| Veins do what? | show 🗑
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| Heart rate modifier:age | show 🗑
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| show | Afterload problem, increase force on L ventricle, diastole heart failure
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| Varicose veins: What happens when valves malfunction? | show 🗑
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| Tunica Externa | show 🗑
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| Common causes of heart failure- | show 🗑
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| show | Autorythmic spontaneously generate signal
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| Heart failure signs and symptoms | show 🗑
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| show | Changes in HR
-chemical, age, gender, exercise, body temp
-tachycardia and bradycardia
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| show | Muscular, elastic, arterioles
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| Arterioles feed into what? | show 🗑
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| show | Hormones-Thyroxine, epinephrine
Ions-Calcium, Potassium
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| show | CO=HRxSV, amt of bld pumped through L vent in 1 min
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| Congenital heart defects common in? how does it affect heart? | show 🗑
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| show | Regulate BP by altering R to BF
-Norepinephrine and epinephrine- released in response to stress and nicotine, both cause vasoconstriction
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| show | ANP-produced by heart
Relaxed by atrial myocytes in response to:
atrial dystension, sympathetic stimulation of heart, increase Na+ lvls, angiotension 2, endothelium
Cause bld volume to decrease
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| show | Produced by hypothalamus when bp is low
cause kidneys to conserve H2O
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| show | Intercalated disks signal every mm to contract
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| show | Does not pulsate, lumen get large as pressure decreases
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| show | Kidneys receive inadequate flow, they release renin
Renin acts as an enzyme to make angiotensin 2
Angiotensin 2 causes increase in BP; release aldosterone & ADH
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| show | Lipid soluble substances diffuse through lipid bilayer
H2O soluble pass through fluid-filled intercellular clefts
fenestrations
large molecules are actively transported by pinocytotic vesicles or cabeolae
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| Myogenic controls of autoregulation | show 🗑
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| show | At base of true capillares
So blood can move from arteries to veins, into capellaries
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| show | Amt to which heart mm is stretched before contraction
-Venous Return- bld returning to heart increase force of contraction
increase VR=increase EDV=increase CO
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| Capillary Beds | show 🗑
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| show | Intercalated disks
Mitochondria
Calcium delivery
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| Direct renal mechanism; independent or dependent of hormones? | show 🗑
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| Afterload | show 🗑
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| Continious | show 🗑
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| What factors affect contractility? | show 🗑
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| Differences in mechanism of contraction : cardiac | show 🗑
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| - inotropid factor | show 🗑
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| show | Multiple capalaries drop O2 bld here
-smallest veins
-endothelium with a few pericytes & maybe some smooth mm cells
-porous
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| show | Renin- angiotension mechanism
when arterial bld pressure decrease kidneys, release renin which produces angiotensin 2
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| Pathology of BP regulation: Hypotension: causes- | show 🗑
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| Hypertenstion; 3 categories of hypertension? | show 🗑
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| Maintaining BP- 3 mechanisms of maintaing BP | show 🗑
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| show | Neural controls; maintain BP by altering resistance to BF
-Baroreceptrors-stretch receptors
-Chemoreceptors-detect chemicals in bld
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| show | Respond to stretch in arteries caused by increased BP. cause vasodialation/restriction when stretched.
Located in walls of:
Carotid sinuses
--CArotid sinus reflex
aortic arch
most large arteries in neck & thorax
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| Chemoreceptors respond to decrease in? increase in? when activated, causes? | show 🗑
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| Early Diastole | show 🗑
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| show | primary-unidentifiable cause, but involve
diet
obesity
age diabetes mellitus
heredity
stress
smoking
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| show | Indentifiable, underlying conditions
10% have it, atherosclerosis, hyperthyroid
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| Tissue perfusion is necessary for? | show 🗑
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| show | Automatic adjustment of BF to each tissue in proportion to needs.
Done by: metabolically- increase tissue perfussion
Myogencially- autoregulation in smooth mm
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| Myo | show 🗑
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| show | origin
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| Metabolic controls of autoregulation | show 🗑
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Created by:
celdia
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