Investigation Flashcards
Resting heart rates
Your resting heart rate, or pulse, is the number of times your heart beats per minute when you are at rest, such as when you are relaxed, sitting, or lying down. Resting heart rate varies from person to person.
Cardiac output
Cardiac output is the product of heart rate (HR) and stroke volume (SV) and is measured in litres per minute.
Maximum heart rate
Your max heart rate is the greatest number of beats per minute your heart can possibly reach during all out strenuous exercise. You can estimate your maximum heart rate based on your age. To estimate your maximum age-related heart rate, subtract your age from 220.
Heart rate
Your pulse rate, also known as your heart rate, is the number of times your heart beats per minute. A normal resting heart rate should be between 60 to 100 beats per minute, but it can vary from minute to minute.
Exercise intensity
Exercise intensity refers to how hard your body is working during physical activity, exercise intensity is described as low, moderate, or vigorous.
Aerobic and anaerobic respiration
Aerobic Respiration — Takes place in the presence of oxygen.
Anaerobic Respiration –Takes place in the absence of oxygen.
Circulatory and respiratory systems working together
- maintain homeostasis
- respiratory system moves gases into and out of the blood
- circulatory system supports the respiratory system by bringing blood, nutrients and oxygen from the lungs to tissues and organs throughout the body.
-It also helps remove carbon dioxide and waste products.
Breathing rate
When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase
Factors affecting respritory rate
This is the number of breaths you take per minute- emotional state, physical fitness,
high respiratory rate= anxiety, fever
low respiratory rate = drug overdoses, obstructive sleep apnoea, and head injuries.
Heart rate
For most people, a resting heart rate between 60 and 100 beats per minute is considered normal. It’s affected negatively by stress, hormones, and medication. Such factors as stress, caffeine, and excitement may temporarily accelerate your heart rate, while meditating or taking slow, deep breaths may help to slow your heart rate. Exercising for any duration will increase your heart rate and will remain elevated for as long as the exercise is continued.
Sympathetic
The sympathetic system controls “fight-or-flight” responses. In other words, this system prepares the body for strenuous physical activity. The events that we would expect to occur within the body to allow this to happen do, in fact, occur.
Parasympathetic
The parasympathetic system regulates “rest and digest” functions, restores the body to a calm and composed state and prevents it from overworking
Literature review
A review of books, scientific journals and the Internet to see what information has already been collected by others.
Observation
Information is gathered using the senses or instruments that enhance the senses, such as a microscope or stethoscope.
Classification
The grouping of organisms based on the similarity of their characteristics; the placement of organisms into groups.
