NU110 | NU 110 Exam 3 | Integrated
Human Sciences Exam | 100% Correctly
Answered & Rated A+ | 2025/2026 Guide
What is the phase of the cardiac cycle where the ventricles fill with blood
called?
- Correct Answer - Diastole
What is the function of the heart valves?
- Correct Answer - prevent blood backflow
What is the pacemaker of the heart called?
- Correct Answer - SA Node
What do preload, afterload, and contractility primarily describe?
- Correct Answer - Cardiac output determinants
Which part of the hearts conduction system sets the heart rate?
- Correct Answer - SA Node
The poptiteal artery is located?
- Correct Answer - Behind the knee
What does 'systole' refer to?
- Correct Answer - Hearts contraction phase
, What is the primary function of the sympathetic nervous system in
relation to the heart?
- Correct Answer - Increase heart rate and pressure
What does the right ventricle of the heart pump blood to?
- Correct Answer - Lungs
What vessels supply oxygenated blood to the heart muscle?
- Correct Answer - Coronary Arteries
blood flow in circulatory system starts in the?
- Correct Answer - Right Atrium
What does the stroke volume of the heart refer to?
- Correct Answer - The volume of the blood ejected from the ventricles
each heart beat.
What is the role of the medulla oblongata in neural control of respiration?
- Correct Answer - Adjust breathing rate and depth based on blood.
carbon dioxide, oxygen, and ph levels.
Which muscle contracts and flattens during inhalation, increasing the
thoracic cavity's volume?
- Correct Answer - Diaphragm
How does carbon dioxide in the blood affect the PH?
- Correct Answer - Decreases PH, making blood more acidic
What is the role of surfactant in the alveoli?
Human Sciences Exam | 100% Correctly
Answered & Rated A+ | 2025/2026 Guide
What is the phase of the cardiac cycle where the ventricles fill with blood
called?
- Correct Answer - Diastole
What is the function of the heart valves?
- Correct Answer - prevent blood backflow
What is the pacemaker of the heart called?
- Correct Answer - SA Node
What do preload, afterload, and contractility primarily describe?
- Correct Answer - Cardiac output determinants
Which part of the hearts conduction system sets the heart rate?
- Correct Answer - SA Node
The poptiteal artery is located?
- Correct Answer - Behind the knee
What does 'systole' refer to?
- Correct Answer - Hearts contraction phase
, What is the primary function of the sympathetic nervous system in
relation to the heart?
- Correct Answer - Increase heart rate and pressure
What does the right ventricle of the heart pump blood to?
- Correct Answer - Lungs
What vessels supply oxygenated blood to the heart muscle?
- Correct Answer - Coronary Arteries
blood flow in circulatory system starts in the?
- Correct Answer - Right Atrium
What does the stroke volume of the heart refer to?
- Correct Answer - The volume of the blood ejected from the ventricles
each heart beat.
What is the role of the medulla oblongata in neural control of respiration?
- Correct Answer - Adjust breathing rate and depth based on blood.
carbon dioxide, oxygen, and ph levels.
Which muscle contracts and flattens during inhalation, increasing the
thoracic cavity's volume?
- Correct Answer - Diaphragm
How does carbon dioxide in the blood affect the PH?
- Correct Answer - Decreases PH, making blood more acidic
What is the role of surfactant in the alveoli?
