Correct Answer - A Ans. is 'a' i.e., Towards metaphysis [Ref | Anatomy embryology histology videos & books

Correct Answer - A
Ans. is 'a' i.e., Towards metaphysis [Ref Textbook of general
anatomy p. 80]

Nutrient artery

It enters the middle of the shaft through a nutrient foramen, runs
obliquely through the cortex, and then divides into ascending and
desending branches that run towards metaphysis.

Each branch subdivides into a number of smaller parallel vessels
which enter the metaphysis and form hair-pin loops.

The loops anostomose with epiphyseal,metaphyseal and periosteal arteries.

Therefore, metaphysis is the most vascular zone of the long bone.

The nutrient artery supplies the medullary cavity and inner-two third of cortical bone of diaphysis and metaphysis

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