Avian Anatomy and Physiology

Question 1

Pin Feather

Answer 1

Also called blood feather
* has a blood supply
* cut / remove only if damaged and bleeding

Question 2

Avian Jugular Vein

Answer 2

Right vein used over left
* right is 2/3 larger than left vein

Question 3

Bilobed Uropygial Gland

Answer 3

Preening Gland
* absent in some birds

Question 4

Ventriculus

Answer 4

Also called gizzards
* birds have these

Question 5

Pterylae

Answer 5

• Feathered tracks
• Where feathers lie

Question 6

Bird Vertebrae

Answer 6

Variable number of cervical (8-25)

Question 7

Syrinx

Answer 7

Allows for production of sound in birds
* located just past tracheal bifurcation
* location allows for vocalization even if intubated

Question 8

Pneumatic Bones

Answer 8

Femur, Humerus, some Vertebrae
* bones filled with air
* connect directly to respiratory tract
* lighten bones for flight
* intraosseous catheters should not be placed in these - fluid will go straight to lungs and drown bird

Question 9

Avian Kidney Production

Answer 9

Produces
* urine
* urates

Question 10

Coelomic Cavity

Answer 10

No diaphragm = no abdominal cavity

Question 11

Determine Avian Renal Function

Answer 11

Evaluate Uric Acid Concentration
* not BUN

Question 12

Proventriculus

Answer 12

True glandular stomach
* birds have one