Test 3: ANSC 107
78 Cards in this Set
| Front | Back |
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the sows oviducts (fallopian tubes) are how long?
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3-4 feet
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cervix
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thick wall extension of uterus, passagwayt for sperm, passageway of fetus, species specific (shape)
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the cervix excretes mucos to seal off during pregnacy, what it this plug called?
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cervical plug
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How many annular rings does a cow have?
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4-5
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Is the mare cervix flacid or hard?
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flacid
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the sow cervix has
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interdigitating pads
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Sperm are deposited in the vagina in the
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cow and ewe
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Sperm are deposited in the uterus in the
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sow and mare
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the long strands of mucos during estrous serve as
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sperm super highway and to store sperm
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what type of penis does the stallion have
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vascular penis
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the boar has a
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corkscrew penis, which fits into cervix and produces 300-400ml of semen
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cervix functions as a (2)
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barrier to sperm: mucos and anatomy of cervix acts as sperm filer in cow and ewe reservior for sperm: sperm enter crypts which serve as a favorable environment, majority of sperm 90% are lost through the vagina
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cervix functions as a cont. (2)
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blocking bacterial invasion during pregnacy: mucos highly cross linked and cervix constricts Leukocytespresent to kill bacteria, birth canal: cervical plug liquifies and cervix dialates to permit fetal expulsion at parturition
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uterus involves (4)
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womb, aids in travel of sperm (contractions) secretory organ, has two horns or branches
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oviduct serves as
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site of fertilization, AIJ (ampullary isthmic junction) makes zygote
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how many days does it take for ovum to travel down to uterus?
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3-5 days
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Ovary
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produces female gamete, larges single cell in body
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Follicle
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blister like structure on ovary that contains ovum and hormone rich fluid
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A mature follicle is called
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graffian, when it lyse and releases egg
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a continuous Corpus Luteum is
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false pregnacy, continuous heat or estrous
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Broad ligament
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suspensory support for repro tract
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this structure catches ovum after ovulation
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infundibulum, funnel shaped
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corpus luteum: CL
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"yellow body" forms after ovulation, produces progesterone
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Corpus Albicans: CA
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"white body", regressed corpus luteum
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Functions of the male sex system (2)
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produce and maintain sperm supply (daily basis), detect females in estrus using pheremones
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spermatic cord contains (3)
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contains vans deferens, pampiniform plexus, externam cremaster muscle nerves
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vas deferenes
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transports sperm
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seminiferous tubule
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produces sperm
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maturation of spermatozoa
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corpus (body) epididymis
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final maturation and storage, the only sperm capable of fertilization
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Cauda Epididymis
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stage where drop on tail and head of sperm start to come off
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cauda (tail) epididymis
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connective tissue that holds testis together
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tunica albuginea, tough white covering
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caput (head) epididymus
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maturation os spermazoa, fluid absorption
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Order in which sperm mature
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Caput, Corpus, Cauda
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study figure on 189
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study figure on 189
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Sertoli Cells
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support spermatogenesis (FSH hormone -sperm)
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Leydig Cells
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testosterone synthesis (LH hormone- testosterone)
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Order of which sperm cells evolve
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Spermatogonia, Spermatid, Spermatozoa
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What cells produce testosterone?
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Leydig cells
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What temperature do testis need to be kept at
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3-5*C below body temp
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Scrotum properties that facilitate thermoregulation (4)
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Location of testis outside of body for air circulation, low insulation of scrotum (fat, hair, thin skin), richly endowed sweat glands, tunica dartos muscle which changes thickness
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pampiniform plexus
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artery surrounded by network of viens cools blood coming from body
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how much does the temp decrease before blood entering testes
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4*C or 8*F
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when both testes have not descended
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bilateral cryptorchidism (sterile)
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when one testes descendes
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unilateral cryptorchidism (fertile)
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cryptorchidism is common in
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boars and stallions because testis descent occurs late
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cauda (2)
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only 1/2 sperm priduced make it to this point, fours days of testicular sperm is stored in cauda
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volume of sperm in sheep and swine
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.8ml goats, 225-400ml swine
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sperm concentration in billions for sheep and swine
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3billion, 45 billion
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the boars testicles are held
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on back side of butt area
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the s shaped muscle holding penis in
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symoid flexture
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order of egg development once fertalized
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zygote, morula, blastocyte
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process of giving birth
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parturition
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colostrum
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first milk within 24 hours, high in protien, vitamin, mineral, and antibody concentrates
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what condition has effect on reproductive function
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environment
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how many ovaries are functional in poultry
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one
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how many eggs are released everyday
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one egg per day
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bird penis is called
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phallus
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milk
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87% water, has tryglycerides, lactose, protien, minerals, and vitamins
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Alveoli
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size of pin head, milk goes in middle, oxytocin makes alveoli squeeze and milk comes out
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lipids in milk
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3.5-4%
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calcium in milk
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76% calcium
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somatotrophin
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milk production, rBST, DMI up 10%, milk production up 10%
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flehmen
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lip curling
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Vomeronasal Organ
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draws odor in by curling lips, can detect sexual readiness
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dicromids
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most mammals cant see red, shows up as other color
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percents of using boar odor and not to see if sow is in estrus
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50% without odor, 80% with odor
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tonic immobility
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chicken with head under wing
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disease
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any state other than complete health
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pathology
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study of the essential nature of diseases
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etiology
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cause of the disease or study of causes of disease
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resistance
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defense system against disease
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what could predispose animals to getting a disease faster? (3)
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environment (like cows in really muddy conditions), poor nutrition, insects like arthropods
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clinical or subclinical infection
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disease that is infectious in nature
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acute disease
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have a sudden onset of clinical signs and a short duration of illness
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chronic disease
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symptoms that develope slowly over a period of weeks or months
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diagnostician
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a person with expertise in diagnosing a disease
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herd or flock management program includes (4)
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management, nutrition, genetics, prevention
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Test 1: Study Guide