अपरेयमितस्त्वन्यां प्रकृतिं विद्धि मे पराम्। जीवभूतां महाबाहो ययेदं धार्यते जगत् ॥

apareyam itas tvanyāṁ prakṛitiṁ viddhi me parām jīva-bhūtāṁ mahā-bāho yayedaṁ dhāryate jagat

This the inferior. Know My other nature, the higher, the life-element, O mighty-armed, by which the universe is upheld.

In plain words: Krishna says those eight parts are his lower nature. He also has a higher nature, the life force in all living beings, which holds up the whole universe.