+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
What is the length-tension relationship?
|
Explain why athletes such as baseball and golfers slightly stretch the appropriate muscles beginning the swinging movement.
|
|
Motor units consisting of one motor nerve and 500 to 1000 fiber
|
Called on for forceful tasks like lifting, kicking or jumping.
|
|
Just 5 to 10 fibers
|
Responsible for fine delicate movement such as blinking the eyelid
|
|
Isometric
|
Call for a max effort against an immovable object like a wall or desk.
|
|
Isotonic
|
Even thought a 10pd dumbbell is a constant weight thgouthout a biceps curl the bicep does not generate a constant 10 pds of force
|
|
What are some factors implicated in fatigue
|
Glycogen becomes depleted in the muscles and without it muscles cells cannot contract even with an adeuqte supply of oxygen and fat.
|
|
Name the five major human body systems pertinent to physical activity
|
Cardiovascular, respiratory, nervous, skeletal, nervous, muscular
|
|
Which languages were anatomical terms derived?
|
Latin and Greek
|
|
What is the cardiovascular system composed
|
Composed of blood, the blood vessels, and the heart.
|
|
What is the cardiovascular system composed
|
Distributes oxygen and nutrients to the cells, carries co2 and metabolic waste from the cells protects against disease
|
|
Much blood do average-sized healthy women and men have in their bodies?
|
31 In adults blood accounts for about 8% of body weight for an average sized woman has about 4 to 5 liters while a man has 5 to 6
|
|
Respiratory system
|
Supplies oxygen elimates co2 help regulate acid base balance of the body.
|
|
Respiratory system
|
A series of passagesways leading to and from them, mouth, throat, trachea, bronchi
|
|
How many lobes do the right and left lung have?
|
He right lung has three lobes and the left lung has only two.
|
|
What is the main purpose of the nervous system?
|
Body;s control center and network for internal communication. Role in stimulating and controlling movement.
|
