The four muscles in the anterior compartment are called rectus femoris, vastus medialis,…
Gluteus Maximus Gluteal line posteriorly, the surface of sacrum and coccyx posteriorly, and sacrotuberous ligament. Upper fibers: iliotibial tract; lowermost fibers: gluteal tuberosity of the femur. Thigh extension and femur lateral rotation.…
The insertion is at the lesser trochanter. The illiacus origin is the iliac fossa and the insertion is at the lesser trochanter. These muscles flex the trunk toward the thigh. The muscles that are relaxed during the movement of the trunk flexion are longissimus, illiocostalis, multifidi, rotatores, semispinalis capitis, spinalis, interspinalis, and intertransversarii. Multifidi, rotatores, semispinalis capitis, interspinalis, and intertransversarii were mentioned earlier in this analysis.…
The elbow can be split into three major joints including the humeroulnar, humeroradial, and the proximal radioulnar joint. Consisting of a uniaxial hinge joint that helps with forearm rotation. With 2 degrees of freedom allowing flexion to 135 degree, pronation, and supination. These joints mainly rely on ligaments for most of their stability, by the medial and lateral collateral ligaments.(2) Additional stability is presumed by the muscle tendons. The forearm tendons also known as extensors attaching the muscle to bones predominantly involved in this condition include the extensor carpi radialis brevis where it originates at the lateral epicondyle.(7)…
1. What are the functional classifications for the biceps and triceps muscles in the bicep curl movement? What type of contractions are the biceps and triceps performing during a bicep curl? There are two functional classifications for the biceps and triceps muscles, which are the following: agonists and antagonists.…
Biceps brachii- origin: Long head: Supraglenoid tubercle above the superior lip of glenoid fossa Short head: Coracoid process of scapula and upper lip of glenoid fossa Insertion: Tuberosity of radius and bicipital aponeurosis Action: Flexion of elbow, supination of forearm, weak flexion of shoulder joint Exercise: Bicep curl, hammer curl, barbell curl. Triceps brachii- origin: Long head: Infraglenoid tubercle below inferior lip of glenoid fossa scapula Lateral head: Upper half of posterior or surface of humerus Medial head: Distal 2/3 of posterior surface of humerus Insertion: Olecranon process of ulna Action: Long, lateral, medial head: Are involved in the extension of the elbow.…
Gillian Bianchi and Sarah Collins February 10, 2016 Dr. Leydon SLP-585-A Larynx Dissection 1. When we began we saw the trachea, the aditus, vestibule, and the aryepiglottic folds. a. The trachea is the tube-like structure that attaches to the cricoid, and brings oxygen into the lungs.…
Last, but not least, the subscapularis muscle works to stabilize the glenohumeral joint and allows the shoulder to turn inward. (Team) The supraspinatus, infraspinatus, and the teres minor insert at the greater tuberosity, while the subscapularis inserts are the lesser tuberosity. (Pictures) As far as treatment options go, depending on the size of…
The skeletal muscle system is made of many skeletal muscle fibers which have at least one neuromuscular junction. A neuromuscular junction is the area of the skeletal muscle fiber that is innervated by a motor neuron (motor nerve). It plays a key role in body movement and breathing along with our nervous system. The synaptic knob, motor end plate, and the synaptic cleft are all key parts of the neuromuscular junction. The synaptic knob of an axon connects with a skeletal muscle fiber to form the neuromuscular junction.…
Cases: 1. A 13-year-old male presents with a two-year history of progressive weaknesses in both upper and lower extremities. He finds it difficult to lift heavy objects off a shelf. When sitting on the floor he has to hold onto objects such as a chair to pull himself up. On examination, there is significant wasting of muscles in the shoulders, upper arms, and hips.…
The articular surfaces of the glenohumeral joint are the head of humerus and glenoid fossa of scapula. The humeral head can be in articulation with the glenoid fossa in any position of joint because the head of the humerus is larger than the glenoid fossa. This relationship is best compared with a golf ball siting on a tee, with stability conferred by static and dynamic…
These muscles are located all across the body and are located in the forearms, back, as well as the abdomen. The forearm muscles trained are the flexor carpi radialis, the flexor carpi ulnaris, and the palmaris longus, which are all located in the anterior plane of the forearm (Tortora & Nielsen, 2015). All three muscles primary function is flexion, as well as abduction, and adduction of the wrist joint. The muscles located in the back region that benefit are the rhomboid major, rhomboid minor, latissimus dorsi, and the teres major. The rhomboids functions are adduction, rotation, and stabilization of the scapula, which help in slamming objects to the ground (Tortora & Nielsen, 2015).…
Injury to the hamstring origin usually occurs when sudden forcible contraction of the hamstring muscles against resistance causes excessive eccentric overload, as in sporting activities such as gymnastics and sprinting (Gidwani and Bircher, 2007). Hamstring origin injuries are rare when considered alongside mid-substance hamstring muscle tears (Kujala et al 1997). Hamstring strains most often occur in the biceps femoris and the most common location is near the musculotendinous junction (Armfield et al 2006).…
While the antagonist would be the triceps brachii relaxing during elbow flexion. 2. List and describe the five properties of skeletal muscle that play a role in how muscles are named. Location of the muscle Anterior, posterior in respect to a bone for example tibialis anterior or tibialis posterior Direction of the muscle…
Kauionalani Kekuawela Feb 1, 2017 KIN 100W Prof. Olliges Effects of muscular strengthening on chronic ankle instability. I have participated in the sport of volleyball for ten years and an injury that is recurrent in the majority of my teammates and myself is ankle sprains. Not only are volleyball players affected by this injury, but all individuals who engage in physical activity. Ankle sprains can occur on and off the court, either way, it has an impact on our well-being and playing time.…