2016-10-05 Week 7 Biology 255

2016-10-05 Week 7 Biology 255 - Biology 255L Week 7 Do you...

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Section 24 and 32 2015/10/05-06 Biology 255L Week 7 “Do you even lift, bro?” edition
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Announcements Week 8 minitest is still over all of week 6 and 7
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Learning Objectives – By the End of Week 7, You should be able to... Identify components of a myofiber using the model Identify connective tissues of muscles using the model Identify parts of the neuromuscular junction using the model Identify the muscles listed on your objectives on the cats or models (unless denoted otherwise) Identify the calcaneal (Achilles) tendon and the linea alba Name the origin, insertion, and basic function of ALL listed muscles Identify individual muscles in hamstring, quadriceps, and rotator cuff muscle groups
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Dissections Latissimus Dorsi (Fig. 10.8) – If you didn’t finish last week Triceps Brachii, Biceps Brachii (Fig. 10.8) – If you didn’t finish last week Identify, DO NOT DISSECT, pectoralis major and pectoralis minor Expose flexor muscle group in anterior forearm Extensor digitorum communis and extensor digitorum lateralis in posterior forearm External oblique, internal oblique, transversus abdominis, rectus abdominis (Fig. 10.9) DO NOT CUT INTO ABDOMINAL CAVITY If you think you have, try again on other side Masseter (Fig. 10.11 and 10.12) – don’t need to dissect, but need to expose
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After Dissections Review ALL MUSCLES – from this week as well as last week – on the cat Can you name the muscles in the rotator cuff, quadriceps, and hamstrings? Once you are done, clean up your cats, 409 your tables, and start marking origins and insertions of muscles IN PENCIL on skeletal models Hint: Check p158-9 in lab notebook
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Body
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Rotator Cuff Muscles medially rotates the humerus winding up for the pitch abducts the humerus executing the pitch laterally rotate the humerus completing the pitch & slowing down the pitching arm
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Identify the Pectoralis major and Pectoralis minor
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Identify the Pectoralis major and Pectoralis minor Pectoralis  minor Pectoralis major Pectoantebrachialis
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Function Tables Note that in cats, pectoralis minor is actually bigger than pectoralis major Pectoralis major Origin: clavicle, sternum, cartilages of ribs 2-6 Insertion: fibers converge to form a short tendon that
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  • Spring '08
  • Staff
  • Biology, Human Anatomy, costal cartilages, pubic crest, internal oblique, Extensor digitorum communis

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