Examlex
During which of the following muscle contractions does a muscle lengthen as it contracts?
Cremaster Muscle
Extension of abdominal muscles originating from the internal oblique muscles; in the male, raises the testicles; in the female, envelops the round ligament of the uterus.
Dartos Muscle
Layer of smooth muscle in the skin of the scrotum; contracts in response to lower temperature and relaxes in response to higher temperature; raises and lowers testes in the scrotum.
Epididymis
A coiled tube where sperm are stored and mature, located at the back of the testis.
Acrosome
Cap on the head of the spermatozoon, with hydrolytic enzymes that help the spermatozoon penetrate the ovum.
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