IB SEHS Topic 2 Study Guide 2025
Questions and Answers
List the pathway of blood in your heart - ANSWER✔✔-1) Superior vena cava
2) Inferior Vena cava
3) Right atrium
4) Tricuspid valve
5) right ventricle
6) pulmonary artery
7) lung cappilaries
8) pulmonary vein
9) left atrium
10) mitral valve
11) left ventricle
12) aorta
, Describe what happens when you inhale: - ANSWER✔✔-ribs push outward and
diaphragm downward to make the chest cavity larger so the lungs can inflate; the
pressure around the lungs decreases; air flows into the lungs
Describe what happens when you exhale: - ANSWER✔✔-ribs push inward and
diaphragm upward to make the chest cavity smaller so the lungs can deflate; the
pressure around the lungs increases; air flows out of the lungs
list the pathway of air through the respiratory system: - ANSWER✔✔-- Nasal/Oral
Cavity
- Pharynx
- Larynx
- Trachea
- Bronchi
- Bronchiole
- Alveoli
why does the respiratory rate increase during exercise? - ANSWER✔✔-exercise
increases heart rate = increases cellular respiration = more Oxygen = more energy (ATP)
= more carbon dioxide must be released
Questions and Answers
List the pathway of blood in your heart - ANSWER✔✔-1) Superior vena cava
2) Inferior Vena cava
3) Right atrium
4) Tricuspid valve
5) right ventricle
6) pulmonary artery
7) lung cappilaries
8) pulmonary vein
9) left atrium
10) mitral valve
11) left ventricle
12) aorta
, Describe what happens when you inhale: - ANSWER✔✔-ribs push outward and
diaphragm downward to make the chest cavity larger so the lungs can inflate; the
pressure around the lungs decreases; air flows into the lungs
Describe what happens when you exhale: - ANSWER✔✔-ribs push inward and
diaphragm upward to make the chest cavity smaller so the lungs can deflate; the
pressure around the lungs increases; air flows out of the lungs
list the pathway of air through the respiratory system: - ANSWER✔✔-- Nasal/Oral
Cavity
- Pharynx
- Larynx
- Trachea
- Bronchi
- Bronchiole
- Alveoli
why does the respiratory rate increase during exercise? - ANSWER✔✔-exercise
increases heart rate = increases cellular respiration = more Oxygen = more energy (ATP)
= more carbon dioxide must be released
