Reproductive biology

Very little is known about caenolestid reproduction, including mating system. Normal litter sizes can be guessed at from the number of teats—four in members of the genus, Caenolestes, five or seven in the Rhyncholestes species. Females do not have a pouch, so nursing young must latch on firmly to the mother's teat in order to survive. Once milk is flowing, the teat swells in the infant's mouth so that it cannot easily become detached. When the young become too big to be carried beneath the mother's body, she presumably leaves them in a nest while she goes out to feed, returning periodically to suckle them.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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