There are 6000 genes in yeast; 21,700 in a nematode worm; 17,000 in a fly; 25,000 in the small plant Arabidopsis; and probably 20,000 to 25,000 in mice and humans

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#Id: 6612

#Unit 7. System Physiology – Animal

Secretion of progesterone during the latter half of the cycle raises the body temperature about 0.5°F

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#Id: 6613

#Unit 7. System Physiology – Animal

In humans,

Only one of the follicles in one ovary starts to grow rapidly and becomes the dominant follicle, while the others regress, forming atretic follicles.

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#Id: 6614

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 6615

#Unit 7. System Physiology – Animal

The first 14 days of the menstrual cycle involve follicular development (follicular phase).

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#Id: 6616

#Unit 7. System Physiology – Animal

The last 14 days of the menstrual cycle are dominated by the corpus luteum (luteal phase).

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#Id: 6617

#Unit 7. System Physiology – Animal

At the midpoint of the cycle, between the follicular and luteal phases, ovulation occurs.