2. What anterior arm muscle can you observe when you ftex a heavy objecr? What a

Question

2. What anterior arm muscle can you observe when you ftex a heavy objecr? What action is common among the muscles on the anterior side of the forearm? 3. Section S: Muscles of the Lower Limb Study the muscles listed in the textbook. Use your textbook as a helpful guide. 1. What muscle is primarily involved in pushing the thigh down when climbing stairs? 2. The word sartorius"is a Latin word that means pertaining to a tailor. The muscle contracts to rotate your thigh in order to stand up from a cross-legged position, which tailors had to do frequently many years ago. Try this action and palpate the sartorius while you do so. Name one other muscle that contracts to make this movement possible 3. What is the common insertion of the muscles forming the quadriceps femoris? 0 Muscular System Lab Report: laboratory 9

Explanation / Answer

1. Biceps brachii, brachialis, coracobrachialis and triceps brachii are seen prominently when heavy object is lifted.

2. Pronator teres pronates the forearm, turning the hand posteriorly. Pronator quadratus is also present on the forearm and when it contracts, it pulls the lateral side of the radius towards the ulna, thus pronating the hand.

3. Some of the muscles involved are hip flexors like iliopsoas, sartorius, rectus femoris, tensor fasciae latae pectineus, the gluteus medius, the gluteus maximus, the quadriceps.

4. Quadriceps muscle insert into the tuberosity of the tibia through the patella, where the quadriceps tendon becomes the patellar ligament.

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