An Introduction to Human Evolutionary Anatomy by Leslie Aiello

By Leslie Aiello

An anthropologist and an anatomist have mixed their abilities during this booklet to supply scholars and examine staff with the necessities of anatomy and the skill to use those to investigations into hominid shape and serve as. utilizing easy ideas and proper bones, conclusions will be reached concerning the possible musculature, stance, mind measurement, age, weight, and intercourse of a specific fossil specimen. this type of deductions that are attainable are illustrated via reference again to modern apes and people, and a coherent photograph of the background of hominid evolution appears to be like. Written in a transparent and concise kind and wonderfully illustrated, An creation to Human Evolutionary Anatomy is a simple reference for all all for human evolution in addition to a precious significant other to either laboratory sensible periods and new examine utilizing fossil skeletons

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The vertical or ascending rami (ramus (L) = a branch) project upwards from the posterior ends of the body. The external surface of the body (also known as the labial (lip) or buccal (cheek) surface), is marked anteriorly in the mid-line by a mental protuberance (mentum (L) = chin) which begins below the alveolar 34 FIGURE 4-2 Anterior view of the mandible. bone of the central incisor teeth and spreads downwards and outwards to the lower border of the mandible to form a raised triangular area, the mental trigone (Fig.

This divides the most superior aspect of the vertical plate of the palatine bone into an orbital process anteriorly and a sphenoidal process posteriorly (Fig. 26). The notch is turned into a foramen by its articulation with the sphenoid bone above so that it becomes the sphenopalatine foramen in an articulated cranium. The orbital process of the palatine bone is just visible on the posteromedial wall of the orbital cavity and so the palatine bone is also one of the bones that make up the medial wall of the orbital cavity.

The four clinoid processes of the body of the sphenoid bone are also strangely named since they were thought to resemble the posts of a four-poster bed! It is because of this (kline (Gk) = a bed) that we now refer to them as clinoid processes. The optic nerves pass into the orbits through the optic canals which lie just medial to the anterior clinoid process. Further details of this region are given in Chapter 9. By six years of age, the sphenoidal air sinus has begun to hollow out the body of the bone and in adults this part of the sphenoid is little more than a shell of bone with a thin mid-line partition.

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