Download Anatomy and Physiology of Birds: Terms Relating to Chickens and more Quizzes Animal Biology in PDF only on Docsity! TERM 1 Chick DEFINITION 1 a young chicken from hatch to 5 weeks old. TERM 2 Cockerel DEFINITION 2 A male chicken less than one year of age TERM 3 Pullet DEFINITION 3 A female chicken through her first laying year TERM 4 Cock/ Rooster DEFINITION 4 A male chicken greater than one year of age. TERM 5 Hen DEFINITION 5 A mature female geater then one year old TERM 6 How many air sacs do birds have DEFINITION 6 four pairedand one unpairedwhich connect to the lungs to create a respiratory capacity.- two cervical,- one clavicular- two cranial TERM 7 How do birds respiratory system differ from mammals DEFINITION 7 they do not have a diaphragmsynrix at the end of the trachea instead of vocal cords in the larynx.air sacs, limited lung expansion, and air capillaries instead of alveoli. TERM 8 what are the lungs attached to DEFINITION 8 the back bone.** lungs have air capillaries that are interwoven with blood capillaties for gas exhange. TERM 9 inspiration DEFINITION 9 when the bird breathes in TERM 10 expiration DEFINITION 10 when the bird breathes out/ expells air from its body TERM 21 Gall Bladder DEFINITION 21 the glal bladder is partly embedded in the right lobe of the liver TERM 22 Heart DEFINITION 22 has 4 chambers located in pericardial sac TERM 23 Kidney DEFINITION 23 dark red paired structures that lie along the back. 3 lobes; cranial, middle, caudal. Arising from the anterior lobe of each kidney is the ureter that continues until the cloaca TERM 24 Spleen DEFINITION 24 a dark red, rounded organ, situated to the right of the proventriculus TERM 25 the chalazae DEFINITION 25 two cord like structures which keep the yok centered in the egg, first appear in the uterus.an axis the yok can rotate around and keep the germinal disc uppermost at all times TERM 26 the magnum DEFINITION 26 dense portion of the albumen is added.shape of egg determined her TERM 27 albumen DEFINITION 27 serves as a shock absorber and feeds the developing embryo. TERM 28 isthmus DEFINITION 28 smaller in diameter then the magnum. Two shell membranes form. the shell membrane loosely contain the yolk and dense white until the rest of the albumen is added in the uterus TERM 29 the shell DEFINITION 29 added in the uterus or shell gland portion of the oviduct. composed of mostly calcium carbonate.20 hours for shell to formif they lay brown eggs- the color pigment is added in the last hour of shell formation TERM 30 vagina DEFINITION 30 thin coating called bloom is added to keep bacteria or dust from entering the egg shel pores. TERM 31 oviposition DEFINITION 31 the act of pshing the egg from oviduct TERM 32 ovary DEFINITION 32 only the left ovary is present in adult hens.if left ovary is removed, growth of the right ovary will occur TERM 33 follicles DEFINITION 33 the ovary consists of a follicular hierarchy composed thousands of follicles including:Prehierachial follicle- small white follicles, small yellow folliclespreovulatory folliceles- 1- 7 days follicle spostovultory follicle- empty sac left following ovulation of the F1 follicle. TERM 34 Stigma DEFINITION 34 relatively avasuclar site of ovulation from teh folicle TERM 35 Oviduct DEFINITION 35 only left oviduct is present in adults
