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Oxytocin
The OT hormone targets the uterine wall and induces contraction during labor. It is a positive feedback hormone.
No oxytocin is used to stimulate labor. In humans, oxytocin stimulates milk let down during lactation, uterine contraction during birth and is released during sexual orgasm in both men and women.
The uterus is a muscle. During menses it contracts to expel the uterine lining and menstrual blood. This is a mild from of the contraction it does to push out a baby. The contraction can press against a blood vessel and cut off the blood supply. This pinching off of the blood supply causes the cramping.Answer 2:I believe it's because of the shedding of the uterus lining.
During a contraction, the I bands and H zone of a sarcomere contract. The A bands remain unchanged.
a concentric contraction- a concentric contraction involves the muscle length, shortening during a contraction! YA-trick-YA!
A number of factors causes a cow to prolapse her uterus:Difficult calving that causes injury or irritation to the birth canalSevere straining during birthExcessive pressure applied when pulling a calfPoor uterine toneNutritional-related problems with low blood calcium levelsCow is in poor body conditionRetained placentaLoose uterine attachment in abdominal cavityProlonged pregnancyLack of exercise for the cowSee the related links below for more info.
definitely during pregnancy
The uterine walls
During muscle contraction the actin heads pull the sarcomere closed
Isotonic contraction
during isometric contraction, the energy used appears as movement