Exotic Cardiovascular and Respiratory

Why does the avian body have a great need for oxygen?

• To support high metabolic rate and energy needs

• To support low metabolic rate and energy needs

• To support moderate metabolic rate and energy needs

• To support variable metabolic rate and energy needs

Which of the following is a characteristic of the avian respiratory system?

• Birds have a diaphragm.

• Birds have an epiglottis.

• Birds have relatively small lungs plus nine air sacs.

• Avian lungs expand as they fill with air.

How is air moved in and out of the respiratory system in birds?

• Through the diaphragm.

• Through the epiglottis.

• Through pressure changes in the air sacs.

• Through the expansion of the lungs.

(a)   connects the nasal and oral cavities in birds.

• Nares
• Glottis
• Choana
• Larynx

What type of cartilage rings does the trachea have?

• Incomplete hyaline cartilage rings

• Complete hyaline cartilage rings

• Elastic cartilage rings

• Fibrocartilage rings

The ______ or the avian voice box is located at the bronchial bifurcation

Which of the following statements about avian lungs is true?

• Lungs are divided into lobes.

• Lungs have a high ability to expand.

• Lungs are attached firmly to the ribs, thoracic vertebra, and body wall.

• Lungs make up 10% of the total body volume.

What is the color of the lungs due to their vascular nature?

• Dark red

• Bright red

• Pale yellow

• Blue

Avian bronchi split into (a)  

• Alveoli
• Parabronchi
• Trachea
• Bronchioles

What is the function of the tiny, branching 'air capillaries' in the parabronchi?

• To filter dust particles

• To exchange gases between the lungs and the blood

• To produce mucus

• To transport nutrients