Lab 24: Avian Anatomy Flashcards Preview

Undeleted > Lab 24: Avian Anatomy > Flashcards

Flashcards in Lab 24: Avian Anatomy Deck (22):
0

fx of uropygial gland papilla

has sebaceous secretion that is spread to feathers during preening

1

T or F: birds don't have sweat glands

T

2

triceps brachii is supplied by which nerve?

radial

3

sciatic n. lies deep to which muscle?

biceps femoris

4

T or F: birds don't have a diaphragm

T

5

what is a crop?

right-sided outpocketing of the esophagus near the thoracic inlet

6

Which is larger: the L or R jugular vein in the bird?

R jugular vein

7

Which 2 veins are commonly used for venipuncture in birds?

brachial vein, cutaneous ulnar (wing) vein

8

T or F: bird kidneys are multi-lobed

T

9

T or F: birds don't have a urinary bladder or urethra

T

10

How does the venous circulation in the hindquarters differ in birds vs. mammals?

Birds use a "renal portal system" which sends blood percolating through the kidney before returning to the heart through the vena cava

11

3 parts of the cloaca

coprodeum, urodeum, proctodeum

13

Why are the spermatic cord and tunica vaginalis absent in birds?

The testes do not descend; they remain at their abdominal origin. There are also no accessory glands or urethra

14

What is caponization?

removal of testes a bird. Facilitates fattening and improves meat quality

15

phallus

copulatory organ located in the ventral tip of the vent. Form a groove for the passage of sperm when engorged with lymph

16

describe the oviduct of the bird

-represents the entire genital tract from the ovary to the cloaca
-reduced in length during moulting
-usually only develops on the left side
-has 5 sections

17

5 sections of the oviduct of a bird

1) infundibulum
2) magnum
3) isthmus
4) uterus
5) vagina

18

shortest segment of the oviduct of a bird

infundibulum. It is fluted and thin-walled and the oocyte passes through it in about 15 mins.

19

longest segment of the oviduct of a bird? What does it produce?

magnum. It is highly coiled and its mucosa secretes about half of the total albumin to the egg over a period of 3 hrs

20

What does the isthmus secrete?

albumin and shell membranes

21

What does the uterus secrete?

hard calcareous shell of the egg

22

Where does the vagina begin and end? Describe the fx of the vagina in a bird during laying.

Begins at a uterovaginal sphincter and opens on the lateral wall of the urodeum. During laying, protrudes through the vent to minimize contact with feces.

Decks in Undeleted Class (134):