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Muscles of the Body
definitions of muscles
| Question | Answer |
|---|---|
| used in all side lifting movements and any movement of the humerus on the scapula. It is divided into three portions, anterior, middle and posterior, with the fibres having different roles due to their orientation. | Deltoid |
| Outer 1/3 of the clavicle - Acromion process -Spine of the scapula | Origin of Deltoid |
| Deltoid tuberosity on the humerus | Insertion of Deltoid |
| Anterior portion - Shoulder flexion and internal rotation Posterior portion - Shoulder extension and external rotation All fibres - Shoulder abduction | Actions of Deltoid |
| Should joing consists of what muscles | Deltoid, Supraspinatus,Subscapularis,Teres Major,Infraspinatus, Latissimus Dorsi, Teres Minor,Pectoralis Major |
| is the largest and most superficial of the two chest muscles. IT and the anterior fibres of Deltoid work closely together. Pec-fly and push-up exercises work IT. | Pectoralis Major |
| Medial 1/2 of the clavicle Costal cartilages of the first 6 ribs Sternum | Origin of the Pectoralis Major |
| Intertubercular groove (between the greater and lesser tubercles) of the humerus | Insertion of the Pectoralis Major |
| Shoulder flexion Internal rotation Adduction | Actions of the Pectoralis Major |
| Vastus Lateralis Vastus Intermedius Vastus Medialis Popliteus | Muscles that make up the knee joint |
| is sometimes classified as two muscles, Iliacus and Psoas major, with Iliacus arising from the Ilium and Psoas from the vertebrae. | Iliopsoas |
| Flexion of the hip Lateral rotation of the hip Flexes torso when the legs are fixed (e.g. laying to sitting) | Action of the iliopsoas |
| Iliopsoas Sartorius Rectus Femoris Tensor Fasciae Latae Gluteus Medius Gluteus Minimus Gluteus Maximus,Piriformis,Biceps Femoris,Semitendinosus,Semimembranosus,Pectineus,Adductor Brevis,Adductor Longus,Adductor Magnus,Gracilis | Muscles that make up the hip and pelvic girdle |
| is part of the Quadriceps muscle group. It is the only muscle of the group which crosses the hip joint and is a powerful knee extensor when the hip is extended, but is weak when the hip is flexed | Rectus Femoris |
| Flexion of the hip Extension of the knee | Action of THe Rectus Femoris |
| is one of the three muscles which form the hamstring group forming the back of the thigh. The muscle is often described as having a long head (the attachment from the ischium) and a short head (attached to the femur). | Biceps Femoris Muscle |
| is the middle of the three short adductor muscles. Groin strains are common injuries to the adductor muscles, which occur without a thorough warm-up or in individuals with chronically tight or weak adductor muscles. | Adductor Longus |
| Hip adduction Hip flexion | Action of the Adductor Lungus |
| Rectus Abdominus, External Obliques, Internal Obliques, Transversus Abdominus,Quadratus Lumborum,Erector Spinae,Splenius,Multifidus | Muscles that make up the Trunk |
| (sometimes known as sacrospinalis) is often described as a group of different muscles called iliocostalis, longissimus and spinalis. Erector spinae consists of lots of small fibres which are situated very close to the spine. | erector spinae |
| Extension of the spine, Lateral flexion (side-bending) of the spine, Maintains correct curvature of the spine | Actions of the Erector spinae |
| wrap around the trunk on each side to form our waists and join to the linea alba, a band of connective tissue running down the front of the abdomen. | External obliques |
| wrap around the waist and insert into the linea alba, a cord like strip of connective tissue running down the centre of the abdomen. | Internal obliques |
| is the largest and most superficial of the calf muscles. Together the IT, Soleus and Plantaris are known as Triceps Surae. IT is the main propellant in walking and running. | Gastrocnemius |
| is a large large muscle, deep to Gastrocnemius. Together the Gastrocnemius, IT and Plantaris are known as Triceps Surae. IT is used constantly in standing to maintain an upright position. | Soleus |
| is a small muscle which is often described as the key of the knee joint. It unlocks the knee joint by rotating the femur at the beginning of knee flexion to allow full knee flexion to occur. | Popliteus |
| is located deep in the thigh underneath the Rectus Femoris muscle. | Vatus Intermedius |
| is the largest and most superficial of the three gluteal muscles which forms the rounded shape of the buttocks | Gluteus Maximus |
| The Femur (thigh bone), the Tibia (shin bone), The fibula (outer shin bone) and patella (kneecap) | The four main bones that make up the knee. |
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kyfleming2
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