Difference between revisions of "Copulatory Behaviour - Anatomy & Physiology"
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| − | + | {{toplink | |
| − | + | |backcolour =EED2EE | |
| − | + | |linkpage =Reproductive System - Anatomy & Physiology | |
| − | + | |linktext =Reproductive System | |
| − | + | |maplink = Reproductive System (Content Map) - Anatomy & Physiology | |
| − | + | |pagetype =Anatomy | |
| − | + | |sublink1=Reproductive System - Anatomy & Physiology#Reproductive Behaviour | |
| − | = Mounting = | + | |subtext1=REPRODUCTIVE BEHAVIOUR |
| + | }} | ||
| + | <br> | ||
| + | ==Mounting== | ||
[[Image:Reproductive Behaviour mounting.jpg|thumb|right|150px|<p>Mounting Behaviour</p><sup> Copyright Nottingham University 2008.</sup>]] | [[Image:Reproductive Behaviour mounting.jpg|thumb|right|150px|<p>Mounting Behaviour</p><sup> Copyright Nottingham University 2008.</sup>]] | ||
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| − | = Intromission = | + | == Intromission= = |
* Successful entrance of the penis into the [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]]. | * Successful entrance of the penis into the [[Female_Reproductive_Tract_-The_Vagina/Vestibule_-_Anatomy_%26_Physiology|vagina]]. | ||
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| − | = Ejaculation = | + | == Ejaculation == |
[[Image:Site of Sperm Deposition.jpg|thumb|right|150px|<p>Summary Table showing Ejaculate Characteristics of Various Species</p><sup> Copyright Nottingham University 2008.</sup>]] | [[Image:Site of Sperm Deposition.jpg|thumb|right|150px|<p>Summary Table showing Ejaculate Characteristics of Various Species</p><sup> Copyright Nottingham University 2008.</sup>]] | ||
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| − | = Species Differences = | + | ==Species Differences== |
{| style="width:75%; height:200px" border="1" | {| style="width:75%; height:200px" border="1" | ||
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| − | == [[Reproductive Behaviour - Copulatory Behaviour Dog - Anatomy & Physiology|Dog]] == | + | === [[Reproductive Behaviour - Copulatory Behaviour Dog - Anatomy & Physiology|Dog]] === |
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| − | == [[Reproductive Behaviour - Copulatory Behaviour Cat - Anatomy & Physiology|Cat]] == | + | === [[Reproductive Behaviour - Copulatory Behaviour Cat - Anatomy & Physiology|Cat]] === |
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| − | == [[Reproductive Behaviour - Copulatory Behaviour Gerbil - Anatomy & Physiology|Gerbil]] == | + | === [[Reproductive Behaviour - Copulatory Behaviour Gerbil - Anatomy & Physiology|Gerbil]] === |
Revision as of 11:14, 3 September 2008
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Mounting
- Elevation of the front legs of the male to straddle the posterior region of the female.
- Learned behaviour
= Intromission=
- Successful entrance of the penis into the vagina.
Ejaculation
- The reflex expulsion of spermatozoa and seminal plasma from the male reproductive tract.
- Sensory stimulation, primarily to the glans penis causes a series of coordinated muscular contractions.
- Once intromission has been achieved, reflex impulses are initiated.
- Neural impulses derived mainly from sensory nerves in the glans penis.
- Upon threshold stimulation, impulses are transmitted from the glans peinis by the internal pudendal nerve to the lumbosacral region of the spinal cord.
- Sensory impulses result in firing of nerves in the spinal cord.
- Forcing of semen into the urethra by nerves in the hypogastric plexus innervating target muscles.
- Urethralis muscle
- Ischiocavernosus muscle
- Bulbospongiosus muscle
- Emission and ejaculation
- Emission is the movement of seminal fluids from the accessory sex glands into the pelvic urethra so that they can mix with spermatozoa.
- Emission occurs before and during ejaculation.
Species Differences
| Species | Ram | Bull | Stallion | Boar |
|---|---|---|---|---|
| Duration of Copulation | 1-2 seconds (1 Pelvic Thrust with Foreleg Clasp) | 1-3 seconds (1 Pelvic Thrust with Foreleg Clasp) | 20-60 seconds (Multiple Pelvic Thrusts,Flagging,Followed by Innactive Phase) | 5-20 minutes (Rapid Pelvic Thrusting to Engage Penis in Cervix) When Penis is Engaged,Thrusting Stops and Ejaculation Commences |
| Volume of Ejaculate (ml) | 0.8-1.0 | 3-5 | 75-120 | 200-250 |
| Site of Semen Deposition | External Cervical Os | Fornix Vagina | External Cervical Os, but Semen Enters Uterus at High Pressure | Cervix and Uterus |
| Average Numbers of Ejaculations to Satiation | 10 | 20 | 3 | 3 |
| Maximum Number of Ejaculations to Exhaustion (Refractory Period) | 30-40 | 60-80 | 20 | 8 |