RESPIRATORY Lecture 1-A&P

Multiple Choice

What are the two main parts of the human respiratory system?

• Upper and lower respiratory system

• Left and right lungs

• Nasal and oral cavity

• Trachea and bronchi

Multiple Choice

How many times do humans breathe in a day on average?

• 8,000 to 12,000 times

• 16,000 to 24,000 times

• 24,000 to 30,000 times

• 12,000 to 16,000 times

Multiple Choice

What is the primary function of the alveoli in the lungs?

• To produce oxygen

• To carry carbon dioxide

• To exchange gases

• To connect the trachea and bronchi

Multiple Choice

Which muscle contracts to facilitate normal inhalation?

• Diaphragm

• Abdominal muscles

• Intercostal muscles

• Both a and c

Multiple Choice

What is the process of moving air in and out of the lungs called?

• Gas exchange

• Pulmonary ventilation

• External respiration

• Internal respiration

Multiple Choice

What structure serves as the organ of phonation?

• Pharynx

• Larynx

• Trachea

• Bronchi

Multiple Choice

What is the purpose of the chemoreceptors in the blood?

• To regulate blood pressure

• To detect changes in oxygen levels

• To send signals to the brain about breathing rate

• Both b and c

Multiple Choice

How many lobes does the right lung have?

• Two

• Three

• Four

• Five

Multiple Choice

What type of blood carries oxygen from the lungs to the body tissues?

• Deoxygenated blood

• Oxygenated blood

• Carbon dioxide-rich blood

• Nutrient-rich blood

Multiple Choice

Which brain structures are involved in regulating breathing?

• Cerebellum and hippocampus

• Pons and medulla oblongata

• Thalamus and hypothalamus

• Amygdala and corpus callosum

Multiple Choice

What is the main function of the nasal cavity in the respiratory system?

• To filter and warm the air

• To produce mucus

• To exchange gases

• To support the trachea

Multiple Choice

Which part of the respiratory system is also known as the windpipe?

• Larynx

• Pharynx

• Trachea

• Bronchi

Multiple Choice

What is the role of the epiglottis during swallowing?

• To produce sound

• To close the nasal cavity

• To prevent food from entering the trachea

• To aid in gas exchange

Multiple Choice

What substance is primarily transported by hemoglobin in red blood cells?

• Carbon dioxide

• Oxygen

• Nitrogen

• Water vapor

Multiple Choice

Which part of the brain is responsible for the voluntary control of breathing?

• Medulla oblongata

• Pons

• Cerebral cortex

• Hypothalamus

Multiple Choice

What is the function of the pleura surrounding the lungs?

• To produce mucus

• To facilitate gas exchange

• To reduce friction during breathing

• To support the trachea

Multiple Choice

What is the term for the tiny hair-like structures that help move mucus out of the respiratory tract?

• Alveoli

• Bronchioles

• Cilia

• Pleura

Multiple Choice

Which gas is primarily exhaled during respiration?

• Oxygen

• Nitrogen

• Carbon dioxide

• Helium

Multiple Choice

What is the main function of the respiratory system?

• To produce energy

• To regulate body temperature

• To exchange gases between the body and the environment

• To transport nutrients

Multiple Choice

Which structure connects the larynx to the bronchi?

• Pharynx

• Trachea

• Alveoli

• Diaphragm