In obstruction of second pa of axillary aery, the anastomosis between the following aery will maintain the blood supply of upper limb

When the axillary aery is blocked, collateral circulation is established through the anastomosis around scapula which links the first pa of the subclan aery with the third pa of axillary aery(apa from the communications with the posterior intercostal aeries). The transverse cervical aery is a branch of the subclan aery and the subscapular aery is a branch of the second pa of the axillary aery. BD Chaurasia 7th edition Page no: 55