Indistinct Mumblings of an Unsound Mind

Lectures: Parts 10 and 11a and 11b – Introduction to the Primates, Osteology AOsteology B
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Lab was a continuation of the Bone series. We identified bones on skeletons and used our knowledge of how joints work to identify how the attaching musculature would move them. It was fun, albeit a tad bit confusing.


(Pre) – Nothing
20:00 – Class start
25:30 – Review Spine
28:08 – Xiphoid process (What is the purpose of the xiphoid?)
33:07 – Scapula to humerous is the glenohumeral joint
34:24 – Rigidity of hips vs. hsoulders as joints are based on usage
37:05 – Some lovers try positions that they can’t handle is a mnemonic for the bones of the hand. Scaphoid, Lunate, Triquetrum, Pisiform, Trapezium, Trapezoid, Capitate, Hamate

39:40 – Hallux has a nail on the big toe for primates
40:32 – Acetabulum is the name for the femoral-pelvic socket
41:24 – The entire illium/ischium/pubis is called the Os Coxae

42:01 – The femur’s top node is the Greater Trochanter; the ball is the Femoral Head; the connection from ball to bone is the Femoral Neck; the double balls at the bottom are called the Condyles
43:46 – Tibia is thick, Fibula is “finite.” Femoral Condyles to the Tibia is the Tibial Plateau. Tibia to the Ankle is the Talus.
45:54 – The heel is the Calcaneus.
46:00 – Patella is Sesamoid

48:04 – Extant is living.
50:42 – North America has extinct primates (Research?); Madagascar has a wide variety of primates.
57:02 – Diets
58:09 – Daubetona Madascariensis (Aye-Aye) uses it’s long finger to tap tree trunks in search of hollows that hold bugs. It then chews the wood using incisors that continually grow like a rodent’s and removes the bug with the same finger.

61:01 – Gumivore: Tree Sap; Pygmy Marmoset
63:50 – Social Organization
67:16 – Primate: Grasping hands and/or feet; Nail (not a talon) on the hallux; Foward-facing, Close-set, Binocular eyes; Post-orbital Bar; Reduced Sense of Smell; Complex Brain Development

72:12 – Why do we have these features?
75:16 – Wilfrid LeGros Clark – Food (vegetation) was available higher because the larger animals were extinct. We evolved to reach them.
77:37 – Comparison: Squirrels vs. Primates. Squirrels are adapted to live in trees, do they have these features? No. Why not?
78:44 – Matt Cartmill – Food (prey) became available up high as the vegetative animals occupied the space left behind when the larger animals were extinct. We were already predators and further evolved to follow suit.
82:30 – Video: Plesiadapiforms

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