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Questions and Answers
The muscular system consists of four types of muscle.
False
The arm is located between the shoulder joint and wrist joint.
False
The brachialis muscle is located in the posterior compartment of the arm.
False
There are four muscles in the anterior compartment of the arm.
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The triceps brachii muscle is located in the anterior compartment of the arm.
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The Flexor Carpi Ulnaris is a muscle in the deep compartment of the forearm.
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The Semitendinosus is a muscle in the anterior compartment of the thigh.
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The Pronator quadratus is a muscle in the superficial compartment of the forearm.
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The Extensor Digitorum Longus is a muscle in the posterior compartment of the leg.
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The Sartorius is a muscle in the posterior compartment of the thigh.
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The Diaphragm is a thin muscular and tendinous septum that separates the abdominal cavity from the chest cavity.
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The External Oblique muscle is located under the Internal Oblique muscle.
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There are three openings in the Diaphragm.
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The Rectus abdominis muscle is located on the lateral sides of the abdominal wall.
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The Transversus Abdominis muscle is the superficial muscle of the abdomen.
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Study Notes
The Muscular System
- The muscular system consists of three types of muscle: skeletal, smooth, and cardiac muscle.
Muscles of the Upper Limb
Arm
- Located between the shoulder joint and elbow joint.
- Contains four major muscles:
Anterior Compartment
- Biceps brachii
- Brachialis
- Coracobrachialis
Posterior Compartment
- Triceps brachii
Forearm
- The superficial compartment of the forearm contains four muscles: Flexor Carpi Ulnaris, Flexor Carpi Radialis, Flexor Digitorum Superficialis, and Palmaris Longus.
- The deep compartment of the forearm contains three muscles: Flexor Digitorum Profundus, Flexor Pollicis Longus, and Pronator quadratus.
Thigh Region
- The posterior compartment of the thigh contains three muscles: Biceps femoris, Semitendinosus, and Semimembranosus.
- The anterior compartment of the thigh contains four muscles: Adductor, Pectineus, Quadriceps, and Sartorius.
Leg Region
- The anterior compartment of the leg contains two muscles: Tibialis Anterior and Extensor Digitorum Longus.
Posterior Compartment of the Leg
- The soleus muscle has a tendon that attaches to the calcaneal bone.
Diaphragm
- The diaphragm is a thin muscular and tendinous septum that separates the chest cavity from the abdominal cavity.
- It has three openings: esophageal, aortic, and caval.
Muscles of the Abdomen
- The muscles of the abdomen, from exterior (superficial) to interior (deep), are:
- External Oblique: a paired muscle located on the lateral sides of the abdominal wall.
- Internal Oblique: located under the external oblique.
- Transversus Abdominis: the deepest muscle of the abdomen, wrapping around the spine for protection and stability.
- Rectus Abdominis: a muscle located along the front of the abdomen, consisting of six packs.
Muscles of the Thoracic Cage
- There are five muscles that make up the thoracic cage:
- Intercostal muscles (external, internal, and innermost).
- Subcostal muscles.
- Transversus Thoracis muscles.
- These muscles act to change the volume of the thoracic cavity during respiration.
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Description
This quiz covers the three types of muscles and their functions, with a focus on the muscles of the upper limb, including the arm, shoulder, and elbow joints.
