Elbow Flexion: biceps brachii, brachialis, and brachioradialis muscles Hip Flexi

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Elbow Flexion: biceps brachii, brachialis, and brachioradialis muscles Hip Flexion: iliopsoas, sartorius muscles Extension: biceps femoris, semitendinosus, semimembranosus, and gluteus maxim Abduction: tensor fasciae latae, sartorius, and gluteus medius muscles Adduction: gracilis and adductor muscles I Knee Flexion: biceps femoris, semitendinosus, semimembranosus, and gastrocnemius muscles .Extension: rectus femoris, vastus medialis, vastus intermedius, and vastus lateralis Ankle Dorsiflexion: tibialis anterior muscle Plantarflexion: gastrocnemius and soleus muscles Inversion: tibialis anterior and tibialis posterior muscles Eversion: fibularis brevis and fibularis longus muscles ke this task Okay, so now you're thinking, "Wow, that's a lot of work!" Following are a few hints that will ma I You will notice that the following activities are the same as the activities from Exercise 9-3 (p. 238) in Un I As before, perform the indicated activity. If you don't, you'll miss some things less daunting: To save yourself some work, reference that exercise to complete Part 1 of this exercise. to keep it simple. List only the main muscles for each action. For example, when listing the muscles to flex the hip, we easily could include 10 different muscles. To make it simpler, list only those muscles we discussed that flex the hip as their primary action (as in the example on this page). Ready to give it a try? Determine the joints being moved for Part 1, and then determine the muscles moving the joints for Part 2. Refer to Unit 9 (p. 225) for help. When you have completed the activity answer Check Your Understanding question 6 (p. 288). 1 Walking up the stairs Part 2:

Explanation / Answer

1. Walking up the stairs

Part 1:

Hip joint, knee joint, ankle joint

Part 2:

Hip flexion, knee extension and flexion, ankle dorsiflexion, plantar flexion.

2. Doing jumping jacks

Part 1:

Hip joint, knee joint, ankle joint

Part 2:

Gluteus maximus, vastus lateralis, vastus intermedius, vastus medialis, rectus femoris.

3. Answering the telephone

Part1:

Metacarpal and phalangeal joints, elbow joint, wrist joint, shoulder joint.

Part 2:

Extensors and flexors of forearm, biceps, triceps, deltoids, pectorals, trapezius, subcapularis muscles.

4. Jumping rope

Part 1:

Knee joint, ankle joint, shoulder joint, elbow joint

Part 2:

Gastrocnemius, hamstrings, quadriceps, glutes, deltoids, extensors and flexors of forearm.

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