Anatomy and Cell Biology 3319 Lecture : Anatomy Notes

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purplejackal117

1 May 2012

School

Western University

Department

Anatomy and Cell Biology

Course

Anatomy and Cell Biology 3319

Professor

Peter Merrifield

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Document Summary

Muscles of the medial compartment of the thigh groin muscles: all adduct the thigh at the hip, as when riding a horse. When walking, there is subtle adductor movement of the thigh. Superficial group pectineus, adductor longus (both also flex the thigh at the hip), and gracilis (also crosses knee joint to flex the leg). Deep group adductor brevis (flexes thigh) and adductor magnus (extends thigh). Adductor longus (superficial): the most anterior of the adductor muscles. The obturator nerve passes through the obturator foramen in the pelvis. I along the lesser trochanter to the linea aspera on the posterior femur. Action adducts, flexes, and medially rotates the thigh. Innervation: femoral nerve and sometimes the obturator nerve. Gracilis (superficial): is a long and thin muscle. O inferior ramus and body of pubis and ischial ramus. Action adducts thigh, flexes and medially rotates leg, especially during walking. Adductor brevis (deep): concealed by the adductor longus and pectineus.

Related Questions

For muscle anatomy identification, you will need to identify thename of the muscle, the origin, the insertion, and the action ofthe muscle labeled on the models. You can find origins/insertionsin your lab manual, but you can also find the specific origins andinsertions we are looking for on the laminated cards for the claymodeling in lab. For actions, please identify the primary action ofthe muscle. For example for the gluteus maximus, the primaryactions are extension and rotation of the hip and maintain kneeextension. Many muscles also perform other actions in which theyare supporting other muscles. You do not have to include these,just focus on primary action. Please make sure you also know theindividual muscles of the iliopsoas, quadriceps, hamstrings, andpelvic floor.

iliopsoas (psoas major and iliacus)

gluteus maximus

gluteus medius

sartorius

adductor longus

adductor magnus

gracilis

quadriceps femoris (rectus femoris, vastuslateralis, vastus medialis, vastus intermedius)

hamstrings (biceps femoris, semitendinosus,semimembranosus)

pelvic floor (levator ani and external urethralsphincter)- NO origins and insertions assessed for thesemuscles, just identification on models and actions.

Flexor digitorum longus

fibularis longus (peroneus longus)

extensor digitorum longus

gastrocnemius

soleus

extensor hallucis longus

tibialis anterior

Also find: patellar ligament, calcanealtendon

lavendertoad546

This is lab practical questions for Anatomy&physiology I class.

1. If you flex your big toe, what muscle is named for that action?

2. Name a muscle that inserts on the metatarsals and cuneiforms.

3. The most superficial muscle in the gluteal group is the _______.

4. Name an action of the gluteal group.

5. Name the long muscle that originates on the anterior, superior iliac spine.

6. In anatomical position, the ulna is (medial/lateral) to the radius.

7. What part of the ilium does the sciatic nerve run through?

8. If a muscle originated on the posterior, inferior surface of the femur, and inserted on the posterior surface of the calcaneous bone, what kind of action might be produced? 9. Come up with a hypothetical origin and insertion of a muscle that would cause flexion at the hip

10. The fibulae contain the ______ malleoli, while the tibias contain the ______ malleoli.

jadeduck36

1. Describe the involvement of the biceps brachii in thefollowing movements

a.) flexion of the forearm

b.) supination of the forearm/wrist

2. The flexor digitorum superficialis muscle of the anteriorcompartment of the forearm flexes the distal phalanges (T or F)

a.) if false, the name of what muscle would make the statementtrue

3. List three similarities between the muscles of the foot,regarding their structure, orientation, functions, and/ornames.

sangriarabbit324

Anatomy and Cell Biology 3319 Lecture : Anatomy Notes

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