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Lecture

HLSC 1F90 Lecture Notes - Monocyte, Odd Future, Cardiorespiratory Fitness


Department
Health Sciences
Course Code
HLSC 1F90
Professor
Brent Faught

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CHSC 1F90 November 6, 2012
Cardiovascular Disease and Diabetes
Week #9
CVD: Some good news!
- Rates decrease CVD (32% from 47% in 1979)
- Improvements in:
Diagnosis
Emergency and medical care
Drugs
Public awareness
Prevention
Which is the largest artery in the body?
AORTIC ARTERY; 2.5 3 inches in diameter
Facts
- Red = oxygenated blood
- Depleting = deoxygenated blood
- Radial artery for bypass surgery
- Great saphenous vein for bypass surgery
- Oxygenated blood is carried in arties
- Deoxygenated blood is carried in veins
- Largest to smallest size:
1. Aorta
2. Arteries
3. Arterials
4. Capillaries
5. Venuals
6. Veins
7. Venacava
What has considerable amounts of oxygen and carbon dioxide at the same time?
CAPILLARIES
The Heart
- Heart is made of 4 chambers; left and right ventricle, left and right atria
- *** how blood passes through heart diagram
- We breathe to get rid of carbon dioxide that is in deoxygenated blood
- The pulmonary artery is the only artery that carries deoxygenated blood **
- Desire to get rid of carbon dioxide
- Mitral valve = bicuspid valve
- Space between left and right ventricle is called septum

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CHSC 1F90 November 6, 2012
BLUE BABIES: When kids have undeveloped heart (undeveloped septum) deoxygenated
blood from right ventricle pours into left ventricle and then is put out into the body by aorta
which is a problem considering the blood is not yet oxygenized meaning the skin will
appear blue
Types of CVD
- Atherosclerosis
Plaque that develops
Coronary
- Arteriosclerosis
Hardening of the arteries
Loose elasticity over time (age, plaque development)
Type of atherosclerosis
- Coronary heart disease
Heart attack aka myocardium infarction (MI)
Deprived the muscle that contracts heart of oxygen and nutrients causing a heart attack
Ischemia: muscle still working without oxygen (angina pectoris is term for the pain caused
by lack of oxygen in heart)
Beta blockers etc… slows heart down while going into hyperactive states
- Stroke
TIA’S usually go unnoticed; precursor to a full blown stroke (minor stroke)
Hypertension: high blood pressure
High blood pressure: two numbers, first number; systole; is the pressure on arteries when
the heart contracts, second number; diastole; pressure on heart when heart is at rest
(120/80) when blood pressure is 140/90; clinical hyper state
- Hypertension:
Secondary hypertension: Tumors increase blood pressure
- Other forms of CVD
Arrhythmia
o Arrhythmia: irregular heart beats
o Good heart rate at resting condition/minute: 60-80 (best time is early in morning)
o More than 100 beats per minute is bad
Congestive heart failure
Congenital heart disease
Rheumatic heart disease
o Streptococcal
Effects of Stroke on the Body
Left Brain Injury
Right-Brain Injury
Paralyzed right side
Paralyzed left side
Speech language deficits
Spatial perceptual deficits
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