Man and woman engaged in sexual intercourse. As humans become sexually excited,the sex organs prepare for coitus through changes in the circulatory and nervous systems. The brain receives signals from the genitals. The hearts hastens,flooding the arteries,and the veins constrict | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Anatomical Travelogue |
Bildgröße: | 5400 px × 3000 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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