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Quiz #4
Chapter 4: Physiological Changes
15
Anatomy
Undergraduate 1
02/25/2012

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Term
maximal oxygen uptake (VO2max)
Definition
is the maximum amount of oxygen an individual can use per unit of time
Term
aerobic power
Definition
requiring oxygen
Term
anaerobic power
Definition
maximum rate at which metabolic processes can occur without additional oxygen
Term
cardiac output
Definition
is the major indicator of the functional capacity of the circulatory system; refers to the blood pumped by the heart (heart rate) and the quantity of blood ejected with each stroke (stroke volume)
Term
vital capacity
Definition
refers to the total volume of air that can be expired voluntarily folowing maximal inspiration
Term
thermoregulation
Definition
refers to the body's ability to regulate heat, in the context of this discussion, during exercise
Term
basal metabolic rate (BMR)
Definition

refers to the amount of heat produced by the body during resting conditions

  1. indicate minimum energy required to sustain vital functions
  2. sex difference due to hormonic differences
Term
muscular strength
Definition
refers to the maximum force or tension generated by a muscle or muscle groups
Term
muscular endurance
Definition
the ability of a muscle to perform repeated contractions; ability to sustain strength performance
Term
flexibility
Definition
the degree of ability to move body parts through a range of motion without undue strain
Term
blood pressure
Definition
product of cardiac output and peripheral vascular resistance
Term
systolic pressure
Definition
how hard heart is working
Term
diastolic pressure
Definition
peripheral resistance as blood travels through arteries through arteries and capillaries
Term
Development of the Respiratory system
Definition
  • lungs start as "bud" at 3-4 weeks of fetal life
  • by the 16th week they have bronchial tree
  • by 20 weeks they have airways set up
  • 28 weeks ----> viable
  • first 6 months out of the womb, respiratory system doubles in capacity
Term

True or False:

Average heart rate at rest decreases as you age?

Definition

TRUE

  • Age ---------------- Average Rate
  • birth                       140
  • 1 mo                      130
  • 1-6                         130
  • 6-12                       115
  • 1-2 yr                     110
  • 2-4                         105
  • 6-10                         95
  • 10-14                       85
  • 14-18                       82
  • 20-29                       66
  • 30-39                       65
  • over 40                    64
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