Biology B1
Just an overall view of B1
- Created by: James Eyre...
- Created on: 16-05-14 15:51
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- B1
- Fitness and Blood Pressure
- Fit is a measure of how well you can perform a physical task
- Healthy means being free from infections and diseases
- Blood is pumped round the body via contractions from the heart
- Blood pressure is highest when the heart contracts- this is systolic pressure
- When the heart relaxes it is at its lowest- this is Diastolic pressure
- Different factors can increase blood pressure
- Smoking
- Being overwight
- drinking to much alchol
- Being under lots of stress
- Blood pressure can be decreased by making different lifestyle choice
- Blood pressure is highest when the heart contracts- this is systolic pressure
- High Blood Pressure and Heart Disease
- Smoking can increase Blood Pressure
- CARBON MONOXIDE- this combines with the haemoglobin in red blood cells, which reduces the amount of oxygen that they can carry.
- NICOTINE- this increases heart rate. The heart contracts more often, increasing blood pressure
- A poor diet can lead to heart disease
- Saturated fats can cause a build up of Cholestrol
- Cholestrol builds up to form a plaque in the arter, which narrow the artery
- Saturated fats can cause a build up of Cholestrol
- Thrombosis (blood clot) also restricts blood flow
- Smoking can increase Blood Pressure
- Eating Healthy
- FATS- provide energy, act as an energy store and provide insulation
- Fats are made up of GLYCEROL and FATTY ACIDS
- PROTEINS- they are needed for growth and repair of tissue, and to provide energy in emergencies
- Proteins are made up of AMINO ACIDS. They don't get stored
- CARBOHYDRATES- provide energy
- Carbohydrates are made up of simple sugars like glucose. They are stored in th liver as GLYCOGEN or converted to FATS
- WATER- To prevent dehydration
- Age
- Children and teenagers need more protein for growth. Older people need more clacium to protect against degenerative bones diseeases
- Gender
- Fesamles need more iron
- Physical Activity
- Active people need more protein for muscle develpometn and more carbohydrates for energy
- FATS- provide energy, act as an energy store and provide insulation
- B1
- Diet Problems
- EAR= O.6 x body mass (kg)
- BMI= Body mass (kg) / (height m)2
- Eating disorders cause preoblems like Anorexia can lead to self starvation
- Infectious diseases
- Pathogens are microorganisms that cause disease. There are four types
- fungi
- Bcateria
- Viruses
- Protozoa
- The immune systemdelas with pathogens
- 1) Consuming them
- White blood cells can engulf foreign cells and digest them
- 2) Producing Antitoxins
- Antitoxins counter the effect of any poison (toxins) produced by invaiding pathogens
- 1) Consuming them
- Pathogens are microorganisms that cause disease. There are four types
- Diet Problems
- Fitness and Blood Pressure
- If the pressure is too high it can cause blood vessels to burst, and this can lead to strokes, brain dmage and kidney damage
- Blood pressure is highest when the heart contracts- this is systolic pressure
- When the heart relaxes it is at its lowest- this is Diastolic pressure
- Blood pressure is highest when the heart contracts- this is systolic pressure
- High salt levels can increase blood pressure
- High Blood Pressure and Heart Disease
- Smoking can increase Blood Pressure
- CARBON MONOXIDE- this combines with the haemoglobin in red blood cells, which reduces the amount of oxygen that they can carry.
- NICOTINE- this increases heart rate. The heart contracts more often, increasing blood pressure
- A poor diet can lead to heart disease
- Saturated fats can cause a build up of Cholestrol
- Cholestrol builds up to form a plaque in the arter, which narrow the artery
- Saturated fats can cause a build up of Cholestrol
- Thrombosis (blood clot) also restricts blood flow
- Smoking can increase Blood Pressure
- High Blood Pressure and Heart Disease
- VITAMINS and MINERALS- various functions
- Eating Healthy
- FATS- provide energy, act as an energy store and provide insulation
- Fats are made up of GLYCEROL and FATTY ACIDS
- PROTEINS- they are needed for growth and repair of tissue, and to provide energy in emergencies
- Proteins are made up of AMINO ACIDS. They don't get stored
- CARBOHYDRATES- provide energy
- Carbohydrates are made up of simple sugars like glucose. They are stored in th liver as GLYCOGEN or converted to FATS
- WATER- To prevent dehydration
- Age
- Children and teenagers need more protein for growth. Older people need more clacium to protect against degenerative bones diseeases
- Gender
- Fesamles need more iron
- Physical Activity
- Active people need more protein for muscle develpometn and more carbohydrates for energy
- FATS- provide energy, act as an energy store and provide insulation
- Eating Healthy
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