Exam (elaborations)
BIO 344 Chordate Zoology Unit 2 Questions answers latest update
- Course
- Bio 344
- Institution
- University Of Texas - Austin
BIO 344 Chordate Zoology Unit 2 Questions answers latest update
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BIO 344 Chordate Zoology Unit 2Flexion - Decreases the angle between skeletal elements
Extension - Increases the angle between skeletal elements
Adduction - Moves a part closer to some reference point (usually midline)
Abduction - Moves a part away from some reference point
Protraction - Moves a part forward (parallel to sagittal plane)
Retraction - Moves part backward
Pronation - Medial movement of distal end of radius so palm faces downward
(crossing)
Supination - Lateral movement of distal end of radius so palm faces upward
(uncrosing)
Zygomatic Arch - - A bridge of bone that connects the cheekbone and upper
jawbone
, - Only appears when an upper temporal fenestra is present because it's a part of
the boundary of bone in the fenestra
- Applicable to mammals
Retroarticular process - - Projected bone located behind the articulation point of
the lower jaw, providing additional surface area for muscle attachment to
enhance the leverage and strength of the jaw muscles involved in biting and
chewing
- Applicable to sauropsids
Origin - Attachment to the less mobile skeletal element
- Usually more proximal
Insertion - Attachment to the more mobile skeletal element
- Usually more distal
Synergists - Muscles that work together to perform particular action
Antagonists - Muscles that alternately work and relax during the same action
Digastric - - Origin: paroccipital process and
mastoid process (mink), the
ventral side of the bulla (turtle)
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