Week 5: Human Axial Musculoskeletal Structures. Flashcards
Name three primates that contain the Hyoid Bone.
Howler monkey
Siamung
Sumatran Orangutan (male)
What do the greater horns support. What are they attached to.
Greater horns help support the larynx and are attached to the muscles that move the tongue.
What are the lesser horns attached to?
Stylohyoid ligaments
What are the three abnormal spinal curvatures?
Scoliosis
Lordosis
Kyphosis
The human axial skeleton consists of…
How many bones?
Include what main 4 regions? How many bones does each of these have?
Axial skeleton - 80 bones
- Skull: cranium, mandible and auditory ossicles. (28 bones)
- Hyoid Bone (1 bone)
- Vertebral column: vertebrae, sacrum, coccyx (26 bones)
- Thoracic cage: sternum, ribs (25 bones)
What does the hyoid bone support.
Why muscles does it serve as attachments sites for?
the hyoid bone supports the larynx
It serves as an attatchment site for muscles of the larynx, pharynx and tongue.
What does the hyoid bone support.
Why muscles does it serve as attachments sites for?
the hyoid bone supports the larynx
It serves as an attatchment site for muscles of the larynx, pharynx and tongue.
What are the different bone cell types.
OSTEOCYTES Bone is connective tissue. Osteocytes contained in an matrix Osteocytes connected to each other by Sends out signals and maintains bone structure
OSTEOBLASTS. From osteoprogenitor cells Immature bone cells in periosteum. Secretes organic material -osteoid Which will then create bone material. Osteblasts become osteocytes when surrounded by matrix. And stuck
OSTEOCLASTS
large multinucleated cells. Destroy bone
Secretes enzymes and acids to dissolve bone matrix
What are the two components of bone?
- Compact bone- very dense.
Contains parrellel osteons - Spongy bone (cancellous bone)
Trabecular bone structure
