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CHAP. XXI. Of the Muscles which mooue the head.
THe head is mooued primarily or secondarily. Primarily aboue the second rack-bone of the Necke or aboue the first: aboue the second either bend∣ing forward or extending backward, aboue the first it is moued as a Naue * 1.1 vppon an Axletree, or rather as the Poyse of a Watch vpon his Bridge. All these motions are performed by seuen or rather by nine proper paire, (Falopius in his Obseruations acounteth ten) 7 of which are Extenders and Compassers & are situated on the back part in the neck; & two Benders which are placed in the forepart of the necke. The head is mooued secondarily and by accident when it followeth the mo∣tion of the necke: the muscles therefore of the necke mooue the head but onely vnto the sides. For if the necke be not mooued, wee cannot incline the heade at all to the Shoul∣ders.
The first paire are called Splenij or the splintes, because they are very like the rowled * 1.2 splints which Chyrurgeons vse when bones are broken. [ta. 10. δ δ, their original is mar∣ked with 8. their insertion is with 9] They are long and thicke, and on both sides rest vp∣on the rack-bones, and albeit they are very fleshy yet at their original from the fiue vpper * 1.3 rack-bones of the Chest (for they rarely reach vnto the fixt) they are sinewy. From thence they ascend vpward and grow fleshy receiuing a new original from the Ligaments of the rack-bones of the necke; some thinke they arise onely from hence, some from both pla∣ces; howsoeuer their ascent to the head is not direct but somewhat oblique, & from that part of them which proceedeth out of the spines of the chest are produced two membra∣tions Tendons which are inserted into the transuerse processes of the first and third Ver∣tebrae
- I, The processe of the shoulder-blade, called the top of the shoulder.
- O, the fourth Muscle of the arme or the greater round Muscle to which Fallopius his right mus∣cle is adioyned, which some cal the lesser round muscle.
- QQ, the sixt muscle of the arme or the vper blade∣rider. X, the 2 muscle of the shoul∣derblade or the Leuator or beauer.
- Z, the second muscle of the Chest or the greater Saw muscle.
- r, the fift muscle of the chest or the muscle called Sacrolumbus.
- α, β. His place wherein it cleaueth fast to the lon∣gest muscle of the backe.
- γγ, the tendons of this muscle obliquely inserted into the ribs.
- ΔΔ, the first paire of the muscles of the heade or of the Splinters.
- Ch. 8, 9. their lēgth whose beginning at 8 & inser∣tion at 9.
- 10, 11, the sides of this Muscle.
- 12, that distance where they depart one from the other.
- 13, the two muscles called Complexi, neare theyr insertion.
- Φ, the second muscle of the backe or the Longest muscle.
- Ω, the fourth muscle of the backe or the Semispi∣natus.
- ♌, the shoulder blade bare.
- p, A part of the transuerse muscle of the Ahdomen.