Name at least three muscles that actively contracts during the following activities and name its action and innervation
Turning a door knob
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Brachioradialis: its innervation is in the Radial nerve(C5-C6), which acts as a stabilizer of the elbow and also flexes the forearm at the elbow.
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Extensor Carpi Ulnaris: this muscle serves as the hand extension and adduction, which then innervates at the posterior interosseous nerve (C7-C8)
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Lumbricals; The 1st and 2nd lumbricals are innervated by the median nerve. On the other hand, the ulnar nerve is the one innervating the 3rd and 4th. This muscle is responsible for gripping movements.
Throwing a baseball overhead
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Deltoid: The innervation of the said muscle is supported by the Axillary Nerve (C5-C6). This muscle is responsible for the following: abduction, flexion, and extension of the arms.
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Triceps Brachii: This muscle supports the humerus, and helps in preventing any displacement with it. It also assists in terms of adduction and extension of the arm at the shoulder joint. Moreover, its innervation of it is supported by the radial nerves (C6-C7).
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Palmaris Longus: In terms of innervation, the median nerve(C7-C8) is the one responsible. With that, this muscle acts as the flexion of the hand and wrist joints. It also helps in tensing up and tightening the palmar aponeurosis.
Kicking a ball
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Sartorius: The Femoral nerves(L2-L3) innervate the muscle, and this muscle is responsible for the flexion of the hips, and rotation of the thigh in a lateral movement. It also flexes the knee and rotates the leg medially.
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Patella: a network of superficial sensory nerves(lateral and medial, anterior femoral cutaneous nerve, and lateral and medial retinacular nerves). This muscle helps in increasing the moment arm of the patellar ligament, which results in improving the extension capacity of the quadriceps
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Rectus femoris: It is innervated by the Femoral nerve(L2-L4), It acts as a leg extension and hip, as well as thigh, flexion assistance.
Doing sit-ups
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external oblique: The Intercostal Nerves (T7-T11) is the one innervating the said muscles. It acts as a bilateral contraction, and also helps in assisting expiration, flexing the trunk, maintaining abdominal pressure, and supporting the intra-abdominal viscera.
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Transversus abdominis: This muscle is innervated by the lower six thoracic spinal nerves(T7-T12). This muscle acts as a support in the torso, as well as stabilizing the spine and pelvis.
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internal oblique: For its innervation, the one responsible for it is the ilioinguinal and intercostal nerves. This muscle is responsible for the following actions: assisting forced expiration, flexing and bending of trunk, maintaining intra-abdominal pressure, and childbirth.
Walking
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Gastrocnemius: For this muscle, the tibial nerve is innervating. The Gastrocnemius acts as the main plantarflexor in the ankle joint. It also flexes the knee and the foot.
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Tibialis anterior: The innervation of this muscle is supported by the deep fibular nerve (L4-L5). This muscle is responsible for the backward movement (bend and/or contract) of the foot. Moreover, it also acts as a control in the supination of the rearfoot and a suspension of the arch.
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Vastus lateralis: Femoral nerve(L2-L4) innervates the said muscle. It functions as an extension in the knee joints and as a corrector in the patella.
Breathing
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Diaphragm: This muscle is innervated by the phrenic nerves (C3-C5). It is responsible for inhaling and exhaling. The diaphragm contracts and flattens when inhaling, while it relaxes in exhaling.
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Transversus thoracis: During forced expiration, this muscle depresses the ribs. It supports the exhalation process and pulls the rib cartilage caudally. The second to fifth intercostal nerves are the one innervating this muscle.
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Internal Intercostals: as the name implies, this muscle is innervated by the intercostal nerve, and is responsible for the lifting and expanding of the rib cage, which allows exhalation. It is also responsible for pushing the air out of the lungs.