BIOL 105 Final
Terms
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- The vessel leaving the heart with deoxygenated blood going to the lungs is the
- pulmonary artery
- Which of the following is defined as normal quiet breathing?
- Tidal volume
- What contains the olfactory mucosa?
- nasal cavity
- The relaxation (repolarization) of the ventricles of the heart is shown as what part of an ECG readout?
- t wave
- A heart attack results from
- a blockage in one of the blood vessels feeding the heart muscle
- What portion of the heart's electrical system has the fastest electrical signal?
- purkinje fibers
- What is the pacemaker of the heart?
- SA node
- The second chamber in the heart to receive oxygenated blood is the
- left ventricle
- The brain area that provides the basic breathing rhythm is called the
- respiratory center
- Name the parts of the heart's electrical system
-
1. SA Node
2. AV Node
3. Bundle Branches
4. Purkinje Fibers - What gives us our sense of smell?
- olfactory receptors
- Not supposed to get anything except air in. Thin layer
- Nasopharynx
- Food, drink, and air. Thick layer, same lining as inside of mouth
- Oropharynx and Laryngopharynx
- 2 Phases of breathing
-
1. Inspiration - air flows into the lungs
2. Expiration - air flows out of the lungs - Hole in chest wall, causes lung to collapse
- Pneumothorax
- If airway resistance rises, __________ _________ becomes more strenuous.
- breathing movements
- Severely constricted or obstructed bronchioles:
-
1. Can prevent life-sustaining ventilation
2. Can occur during acute asthma attacks, which stops ventilation - Epinephrine release via the sympathetic nervous system
- dilates bronchioles and reduces air resistance
- Tidal Volume
- Air that moves into and out of the lungs with each breath
- Inspiratory Reserve Volume
- Air that can be inspired forcibly beyond the tidal volume
- Expiratory Reserve Volume
- Air that can be evacuated from the lungs after a tidal expiration
- Vital Capacity
- The total amount of exchangeable air
- Nonrespiratory Air Movements
- Most result from reflex action. Coughing, sneezing, crying, laughing, hiccuping, and yawning.
- The master controlling and communicating system of the body
- Nervous System
- Interpretation of sensory input
- Integration
- Response to stimuli by activating effector organs
- Motor output