Skeletal + Respiratory System Flashcards
Why do horses have dilatable nostrils?
A horse is a runner and open-mouthed breathing is NOT characteristic.
Therefore, dilatable nostrils is advantageous!
The nostrils are the most… and… in a horse and the most… in a pig
Pliable and dilatable
RIGID
Why is nostril dilatation advantageous?
When more air is required!
What additional sinus do cow and sheep have?
What does it do?
The Lacrimal Sinus
Warms and moistens the incoming air (like the nasal cavity!)
… are required to move 1 inhaled unit of air through the…
Two breaths
Avian respiratory system!
Why do birds receive FRESH AIR during breathing?
More than any other animal!
Air flow is pushed INTO the lungs, not pulled!
What is NOT a bone of the appendicular skeleton?
Atlas (it is part of the axial skeleton)
What are the anatomically distinct regions of the epididymis?
Head, tail and body
Bile flows from the gallbladder into the cystic duct, along the bile duct and into the…
Duodenum
Where does the tricuspid valve PREVENT the back flow of blood?
From the RIGHT ventricle to the RIGHT atrium!
What is correct about avian species respiratory system?
Air Sacs expand during respiration
