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Description
A series of pregnant mammals are dissected to expose the foetus in each. The uterine/chorionic connections are examined in detail.
A series of pregnant mammals are dissected to expose the foetus in each. The uterine/chorionic connections are examined in detail.
| Module code and title: | S321, Physiology of cells and organisms |
|---|---|
| Item code: | S321; 09 |
| First transmission date: | 09-06-1974 |
| Published: | 1974 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:23:33 |
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| Producer: | Roger Jones |
| Contributor: | Richard Holmes |
| Publisher: | BBC Open University |
| Keyword(s): | Dissections; Electron micrographs; Marsupial frog; Midwife toad; Placenta; Surinam toad; Viviparity |
| Footage description: | Richard Holmes cites several examples of viviparity in lower vertebrates. Still shot of male and female midwife toads (Alytes obstetricans). Male is nursing the eggs. Still shot of a Surinam toad (Pipa pipa) showing young toads emerging from pits on the mothers back. Film shots of the marsupial frogs (Motorama gasthrotheca marsupiata). 2 pairs are shown mating. Shots of male pushing fertilised eggs into the female's pouch. Shots of female releasing hatched eggs from her pouch into the water. Richard Holmes with pig genitalia. He dissects the uterus to expose the piglet. As he dissects he points out both maternal and fetal tissue. Richard Holmes dissects the uterus of a mare to expose the foal. He points out the uterine/chorionic connection and other tissue as he dissects. Richard Holmes dissects a sheep uterus to expose the young. He points out the uterine chorionic connecton and other tissue. Holmes examines the otvctiledons in some detail. Holmes with a partly dissected dog uterus. He exposes part of the pup. The placenta a zonary placenta, is pointed out and its characteristics discussed. Holmes with a model of a human womb showing a baby shortly before birth. He points out the various parts particularly the placenta. Holmes with an actual human placenta just after birth. He describes its characteristics. Richard Holmes examines a sheep chotiledon in detail. He uses diagrams and electron micrographs to study the uterine/chorionic function. Holmes then goes on to examine electron micrographs of the uterine/chorionic function for mares, dogs and humans. |
| Master spool number: | 6HT/71401 |
| Production number: | 00525_1113 |
| Videofinder number: | 1826 |
| Available to public: | no |
