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ANSC 3040 > QUIZ 2 > Flashcards

QUIZ 2 Flashcards

1
Q

Function of Male Reproductive Tract (two)

A
  1. Produce and deliver sperm
  2. Synthesis and secretion of androgens
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2
Q

Spermatic Cord Functions (three)

A
  1. Suspends the testes
  2. Temperature regulation
  3. Regulates the concentration of Testosterone
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3
Q

Spermatic Cord Anatomy

A
  1. pathway for blood, lymph vessels, nerves,and ductus deferens
  2. extends from the abdominal inguinal ring to the dorsal side of testes
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4
Q

Structure and Function (two) of the Pampiniform plexus

A

testicular veins surround the testicular arteries, for countercurrent exchange of:
1. heat (atrial → venous blood)
2. testosterone (venous → atrial blood)

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5
Q

Excurrent Duct System anatomy and functions (3)

A

Made up of afferent ducts, epididymis, and ductus deferens…has smooth muscle and stereocilia
Functions: maturation, storage, and delivery of sperm

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6
Q

Scrotum Anatomy and Functions (4)

A

Four layers: skin, tunica dartos, scrotal fascia, parietal vaginal tunic
Functions: temperature sensor, temperature regulation, protection, and support

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7
Q

Penis Anatomy and Function

A

3 parts: base, shaft, glands (spongiosum and corpus cavernosum)
1. Cupolation
2. Urination

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8
Q

Why is Scrotal Temp Regulation Important? (3) (hint: pqs)

A
  1. Spermatogenesis (production)
  2. Fertilization capacity (quality)
  3. developmental potential of the zygote (survivability)
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9
Q

Testes Anatomy and Function (3)

A

Made of: Testicular capsule, parenchyma, mediastinum, rete tubules
For production of:
1. Spermatozoa
2. Androgens
3. Tubular Fluid (transport of spermatozoa)

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10
Q

Pattern of Hormone Secretion in Sexually Mature Males

A

GnRH → FSH → LH → Testosterone

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11
Q

Define Puberty in Males

A

Having an ejaculate that has threshold spermatozoa for fertilization (quantity and quality)

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12
Q

Define Lumination of Tubules

A

When the Seminiferous tubules grow after week 15 and much more after week 25

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13
Q

Which species reach puberty earlier?

A

Cattle: dairy breeds, early maturing, late maturing

Swine: maternal, meat breeds

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14
Q

Parenchyma Anatomy and Function

A

Made up of interstitial and tubular (seminiferous tubules)

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15
Q

Steps of Spermatogenesis (3)

A
  1. Proliferation (Basal)
  2. Meiotic (Adluminal)
  3. Differentiation (Adluminal)
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16
Q

What modifications do spherical spermatids undergo during differentiation?

A
  1. become motile
  2. condensing their nuclei for protection
  3. forming acrosomes for fertilization
17
Q

Differentiation phases (G-CAM)

A
  1. Golgi phase
    2.Cap phase
  2. Acrosomal phase
  3. Maturation phase
18
Q

Golgi Phase

A
  1. small vesicles of golgi → proacrosomic granules
  2. centrioles migrate to other side of nucleus
  3. golgi ves i le fusion → large acrosomic granule
  4. Proximal centriole forms attachment point of the flagellum
  5. Distal centriole gives rise to flagellum itself
19
Q

The Cap Phase

A
  1. Acrosomal vesicle forms a cap over the nucleus
  2. golgi and other organelles migrate to distal portion
  3. DC (begins) → flagellum
20
Q

Acrosomal Phase

A
  1. nucleus elongates
  2. microtubules → manchette
  3. Neck and annulus formed
  4. flagellum cont. to develop
21
Q

Maturation Phase

A
  1. Manchette forms the post nuclear cap
    2.mitochondria migrates to posterior side of nucleus
  2. annulus forms connection between. middle and principal pieces of the flagellum
22
Q

Steps for Penile Erection

A
  1. Flaccid penis → sexual arousal
  2. vasodilation of helicon arteries (inc blood flow)
  3. inc blood flow to cavernous tissue + dec venous outflow
  4. ejactulation (contraction of bulbospongiosus and ischiocavernosus)
  5. venous outflow
23
Q

Copulatory Behaviour (MIE)

A
  1. Mounting
  2. Intro mission
  3. Ejaculation
24
Q

Precopulatory Behaviour (PCAEP)

A
  1. search for sexual PARTNER
  2. COURTSHIP
  3. sexual AROUSAL
  4. ERECTION
  5. PENILE PROTRUSION
25
Q

Flehmen Behaviour

A
  1. Head elevated
  2. Curling of Lip
    3.Negative pressure in the nasopalatine duct
  3. Evaluation by sensory neurons

…can examine less volatile phermones

26
Q

Ejaculation Fluid Fraction: Ram, Bull (#)

A

1 fraction

27
Q

Ejaculation Fluid Fraction: Stallion (#, types)

A
  1. sperm rich
  2. gel
28
Q

Ejaculation Fluid Fraction: Boar (#, types)

A
  1. Accessory fluid, gelatinous pellets, few sperm
  2. Sperm Rich
  3. Gel portion
29
Q

Ejaculation Fluid Fraction: Dog (#, types)

A
  1. Pre sperm, prostrate
  2. Sperm rich
  3. Prostrate fluid
30
Q

Postcopulatory Behaviour (DRM)

A
  1. Dismount
  2. Refractory Period
  3. Memory
31
Q

Sire Attributes to be Fertile (3)

A
  1. Physical soundness
  2. Good semen quality
  3. Good serving capacity
32
Q

Breeding Soundness Exam (BSE) Steps (5)

A
  1. History (supporting info)
  2. Physical Exam
  3. Repro tract Exam
  4. Collect and examine semen (semen quality)
  5. Evaluate libido and mating ability(serving capacity)
33
Q

Larger Scrotum Circumference = higher…

A

semen quality, motile sperm, sperm survivability

34
Q

Is sire fertility a binary trait or spectrum?

A

spectrum

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