Prana & the chakras

Prana
• Jalandhara bandha prevents prana from escaping the upper body.
• Uddiyana bandha forces prana up the shushumna nadi.
• Mula bandha, when engaged, prevents apana escaping from the lower body and draws it up to unite with prana.

the chakras - From bottom to top the 7 chakras:
1. Muladhara chakra - at the anus
2. Svadhishthana chakra - at the genitals
3. Manipura chakra - at the navel
4. Anahata chakra - at the heart
5. Vishuddha chakra - at the throat
6. Ajna chakra- between and behind the eyebrows
7. Sahasrara chakra - at the crown of the head
From :Ashtanga Yoga Manual