One verse

Srimad Bhagavatam 2.10.29

2.10.29

आदित्सोरन्नपानानामासन् कुक्ष्यन्त्रनाडय: । नद्य: समुद्राश्च तयोस्तुष्टि: पुष्टिस्तदाश्रये ॥ २९ ॥

aditsor anna-pananam asan kuksy-antra-nadayah nadyah samudras ca tayos tustih pustis tad-asraye

aditsoh
desiring to have
anna-pananam
of food and drink
asan
there became
kuksi
the abdomen
antra
the intestines
nadayah
and the arteries
nadyah
the rivers
samudrah
seas
ca
also
tayoh
of them
tustih
sustenance
pustih
metabolism
tat
of them
asraye
the source.

When there was a desire to have food and drink, the abdomen and the intestines and also the arteries became manifested. The rivers and seas are the source of their sustenance and metabolism.