Am I right in saying 1 is Biceps brachii and its function is elbow joint flexion

Question

Am I right in saying 1 is Biceps brachii and its function is elbow joint flexion and supinates the forearm

2 - Musculocutaneous nerve - motor neuron

3- sagittal plane = elbow flexion frontal plane = foreaem supination

Diagram 1: Lateral view of the upper limb showing the skeletal oomponents and a soft tissue structure Question 3 2.5 pts Referring to Diagram 1 above: State the function of this muscle? (1 mark) 2. What functional neurone type would innervate it to produce contraction of the muscle? (0.5 mark) 3. Apply principle M7 to determine the action and the plane of movement for this muscle(1 mark) M7 The position of a muscle relative to a joint determines the plane and direction of movement it can produce at that joint.

Explanation / Answer

1.deltoid muscle...multipennate acromial fibres are powerful abductors of arm at the shoulder joint from beginning to 90°..and anterior fibres are flexors and medial rotators and posterior fibres are lateral rotators and extensors

2.axillary nerve- motor neuron

3.arm abduction along the frontal plane

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