Page [unnumbered]
THE NINETY-FIFTH TABLE.
REPRESENTS the Scapulae, Claviculae and Os Pectoris, or Sternum.
Fig. 1.
The External Convext Part of the Left Scapula or Shoulder-blade.
A B, The Outside of the Scapula a little Arch'd or Convext.
C, The Spina Scapulae;
D, Its Extremity call'd Acromion, Articulated to the Extremity of the Clavicula.
E, The Processus Coracoides or Crow's-Bill-like Process, by some call'd Ancyroides or Anchor-like.
F, The Processus Brevis, or Short Process of the Shoulder-blade which receives the Head of the Arm-bone.
The Rest of the Parts which Circumscribe the Scapula, are Explain'd in the following Fi∣gure.
Fig. 2.
The Internal Concave Part of the Right Shoulder-blade.
A B B, Various Eminencies on the Inside of the Scapula, whence the Fibres of the Musculus Subscapularis take their Origin.
C, The Inferior Angle of the Scapula.
D, The Superior Angle of the Scapula.
E Superior, The Processus Coracoides.
F F G, The Foramina for the Blood-Vessels, which pass in and out from the Meditullium of the Bone.
G Inferior, The Sinus of the Short Process of the Scapula, in which the Head of the Os Hu∣meri is receiv'd.
G Superior, The Internal or Lower Part of the Acromion of the Scapula.
H, The Cervix or Neck of the Short Process.
N. B. From C to D, is call'd the Basis Scapulae; From D to F, the Costa Superior; From H to C, the Costa Inferior Scapulae.
Fig. 3.
The Superior Part of the Right Clavicula or Channel-bone: Some call the Claviculae, Ossa Hu∣merorum: They are also call'd Furculae.
Fig. 4.
The Inferior Part of the Left Clavicle.
A, That Part of the Clavicle Articulated to the Superior Part of the Os Pectoris or Sternum, in which Articulation a Cartilaginous Body is plac'd not Unlike that of the Lower Jaw with the Os Temporum. Vid. App. Fig. 8. S, T.
B, That Extremity of the Clavicula join'd to the Acromion of the Scapula, by Two almost Plain Cartilaginous Bodies appos'd to each other, and Connected by Ligaments: This Conjunction of the Clavicle with the Acromion of the Shoulder-blade we have more than Once seen suffer a Dislo∣cation: when the Patient has fallen from some High Place, and the Top of the Shoulder or Acro∣mion of the Scapula has First come to the Ground. The Scapula with the Arm in such Case will be Deprest, and the Outmost Extremity of the Clavicle will be seen to Arise up: This Disloca∣tion we Mention, because we don't find it taken Notice of (or at least not commonly) by Authors.
C, The Middle Superior and External Part of the Right Clavicula.
D, The Middle Inferiour and External Surface of the Left Clavicula. The Use of the Clavi∣culae is to support the Scapulae, together with the Ossa Humerorum.
Fig. 5.
The External and Forepart of the Os Pectoris or Sternum, whose Appearance in the Adult Dif∣fers very much from that of the Foetus; as may be seen Tab. 101.6. In Aged Bodies it's intirely United into One Bone; in some Adults it's divided into Two; in others (as in this Subject) it has Three Distinct Bones.
A, The Superior and Largest Bone of the Sternum.
B, A Sinus which receives the Internal Round End of the Clavicula.
C, the Superior Part, or almost Semicircular Sinus of the Sternum.
D, The Middle Bone of the Os Pectoris.
E E E, The Sinus's in the Middle Bone of the Sternum Laterally; in which the Cartilaginous Extremities of the True Ribs are Receiv'd.
F, The Lower Bone of the Sternum; the Extremity of which is commonly Cartilaginous, and call'd Cartilago Mucronata or Ensiformis; Externally it Frames that Cavity call'd Scrobiculus Cordis or Heart-pit, commonly call'd the Pit of the Stomach: The Pains of which Part are call'd Cardial∣giae, they Affecting the Upper Orifice of the Stomach call'd Cardia, where the Plexuss's of the Up∣per and Lower Stomach Nerves are made.