Explain the steps involved in the sliding filament model of muscle contraction.   Step 1: Step 2: Step 3: Step 4:

Case Study: Investigating a Suspicious Death Scenario: A detective arrives at a crime scene where a body has been discovered in a locked room. The detective observes the following: ●The body is lying on the floor, face down. ●The limbs are stiff and difficult to move. ●The teeth and hands are clenched tightly. ●There are no obvious signs of injury or struggle. The detective estimates that the individual has been deceased for approximately 12 hours based on the temperature of the body and the presence of rigor mortis. Rigor mortis is a physiological change that occurs in the body after death, characterized by the stiffening of the muscles. Question: What is the underlying physiological mechanism responsible for the development of rigor mortis?

Case Study: A Weightlifter’s Struggle Scenario: A weightlifter is attempting a new personal best in the bench press. As he lowers the barbell towards his chest, he feels a sudden and intense pain in his right shoulder. The weightlifter immediately stops the exercise and seeks medical attention. An examination reveals that he has torn his rotator cuff. Question: Considering the mechanics of a bench press and the function of the rotator cuff muscles, which muscle is MOST likely involved in the weightlifter’s injury?

Explain the steps involved in the sliding filament model of muscle contraction.   Step 1: Step 2: Step 3: Step 4:

Case Study: Examining Elbow Flexion Scenario: A physical therapist is working with a patient who is recovering from a biceps brachii injury. The therapist wants to assess the patient’s ability to flex their elbow, a movement primarily driven by the biceps brachii muscle. Assessment: The therapist asks the patient to sit with their arm extended, palm facing upwards. The patient is then instructed to slowly bend their elbow, bringing their hand towards their shoulder. The therapist observes the movement, paying attention to the following: 1. Range of Motion: Can the patient fully flex their elbow, bringing their hand close to their shoulder? 2. Strength: Does the patient exhibit weakness during flexion, indicating potential issues with the biceps brachii’s ability to generate sufficient force? 3. Pain: Does the patient experience any pain during the movement, suggesting potential inflammation or injury to the biceps brachii or surrounding tissues? Applying Origin and Insertion to Analysis: The therapist understands that during elbow flexion, the biceps brachii contracts, pulling on its insertion point on the radius. This action causes the radius to move towards the humerus (upper arm bone) as the elbow joint bends. The scapula, where the biceps brachii originates, remains relatively stable during this movement. Question: Which of the following statements accurately describes the role of the biceps brachii during elbow flexion?

Which of the following describes a Class II lever system?

Properly label the structures: Structure 1: Structure 2: Structure 3: Structure 4: Structure 5: Structure 6: Structure 7: Structure 8: Structure 9: Structure 10:

Case Study: Examining Elbow Flexion Scenario: A physical therapist is working with a patient who is recovering from a biceps brachii injury. The therapist wants to assess the patient’s ability to flex their elbow, a movement primarily driven by the biceps brachii muscle. Assessment: The therapist asks the patient to sit with their arm extended, palm facing upwards. The patient is then instructed to slowly bend their elbow, bringing their hand towards their shoulder. The therapist observes the movement, paying attention to the following: 1. Range of Motion: Can the patient fully flex their elbow, bringing their hand close to their shoulder? 2. Strength: Does the patient exhibit weakness during flexion, indicating potential issues with the biceps brachii’s ability to generate sufficient force? 3. Pain: Does the patient experience any pain during the movement, suggesting potential inflammation or injury to the biceps brachii or surrounding tissues? Applying Origin and Insertion to Analysis: The therapist understands that during elbow flexion, the biceps brachii contracts, pulling on its insertion point on the radius. This action causes the radius to move towards the humerus (upper arm bone) as the elbow joint bends. The scapula, where the biceps brachii originates, remains relatively stable during this movement. Question: Which of the following statements accurately describes the role of the biceps brachii during elbow flexion?

You are teaching your patient how to use the Incentive Spirometer after they had open heart surgery. After multiple attempts they state that they are in pain and need to cough. What should you do next? 

You are teaching your patient how to use the Incentive Spirometer after they had open heart surgery. After multiple attempts they state that they are in pain and need to cough. What should you do next?