1. Respiratory structure and function

2. Energy Needs
Every muscle contraction involves an interaction between which two myofilaments?
Actin and myosin
Every powerstroke requires what?
ATP
In-Class Assignment: Factors of Muscle Force Production
Hand Out:
Number of motor units recruited
Firing Rate of motor units
Synchronization of firing
Golgi tendon organ
Muscle spindle
Length of muscle
Size of muscle
Application of pre-stretch
Type of fiber recruited
Speed of contraction
Angle of pennation
Agonist, antagonist and synergist activation
Need to know: Explain the concept, explain physiologically how it works, is this factor trainable, how?

3. Energy Needs There is only a limited amount of ATP in the muscle
Two types of processes that will produce ATP
Aerobic
Anaerobic
Aerobic uses oxygen, anaerobic does not (but needs oxygen to help muscle recover from anaerobic activity)
So either way it is important to get oxygen to muscles

4. Four steps in making Oxygen Available For ATP Production
Intake of air into body Respiratory System
Delivery of Oxygen to Working Tissues Cardiovascular System
Uptake of Oxygen into Working Cells Capillaries
Use of Oxygen by Working Cells Mitochondria

5. Figure 1.14 Need to know: Pharynx Glottis/Epiglottis
Larynx/Vocal Cords
Trachea
Bronchus (right and left)
Bronchioles
Alveoli
Pulmonary Vein and Pulmonary Artery

6. Definitions Anatomical Dead Space Minute Ventilation Tidal Volume
the structures in which air is present (including nasal passages, trachea, bronchi, and bronchioles) but no gas exchange takes place
Minute Ventilation
is the volume of air inhaled (inhaled minute volume) or exhaled (exhaled minute volume) from a person's lungs in one minute
Tidal Volume
the lung volume representing the normal volume of air displaced between normal inspiration and expiration when extra effort is not applied

7. Respiratory Muscles Inspiration Expiration Diaphragm
External Intercostals
Anterior Serrati, Scaleni, Sternocleidomastoids
Expiration
Internal Intercostals
Internal/External Obliques
Rectus Abdominus

8. Gas Exchange at the Lungs
Occurs in the alveoli
Oxygen into the blood
Carbon dioxide out of the blood
Occurs through diffusion which depends on the partial pressure and concentrations
Lungs
Lungs O2
CO2
=O2
=CO2
=CO2 O2
CO2
=O2
Blood
Blood