Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon...
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Transcript of Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon...
![Page 1: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/1.jpg)
Bio& 241 A&P 1 Unit 3 / Lecture 1
![Page 2: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/2.jpg)
Introduction to Muscles
1. Origin: Attachment of a muscle tendon to the stationary bone.
2. Insertion: Attachment of the other muscle tendon to the movable bone.
3. Action: The movement that occurs at the joint due to muscle contraction.
![Page 3: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/3.jpg)
Origin and Insertion
![Page 4: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/4.jpg)
Belly
![Page 5: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/5.jpg)
Characteristics Used to Name Muscles
• Direction of Fibers• Size of Muscle• Shape of Muscle• Action of Muscles• Number of Origins of Muscle• Location of Muscle• Origin and Insertion of Muscle
![Page 6: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/6.jpg)
Characteristics Used to Name Muscles
• Direction of Muscle Fibers– Rectus: Parallel to midline– Transverse: Perpendicular to midline– Oblique: Diagonal to midline
![Page 7: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/7.jpg)
Rectus: Parallel to midline
![Page 8: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/8.jpg)
Transverse: Perpendicular to midline
![Page 9: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/9.jpg)
Oblique: Diagonal to midline
![Page 10: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/10.jpg)
Characteristics Used to Name Muscles
• Size of the Muscle:– Maximus: Largest muscle in a group– Minimus: Smallest muscle in a group– Longus: Longest muscle in a group– Brevis: Shortest muscle in a group– Latissimus: Widest muscle in a group– Magnus: Largest muscle in a group– Major: Largest muscle in a group– Minor: Smallest muscle in a group– Vastus: Great or large muscle
![Page 11: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/11.jpg)
Maximus: Largest muscle in a group
![Page 12: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/12.jpg)
Minimus: Smallest muscle in a group
![Page 13: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/13.jpg)
Longus: Longest muscle in a group
![Page 14: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/14.jpg)
Brevis: Shortest muscle in a group
![Page 15: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/15.jpg)
Latissimus: Widest muscle in a group
![Page 16: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/16.jpg)
Major: Largest muscle in a group
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Minor: Smallest muscle in a group
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Vastus: Great or large muscle
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Characteristics Used to Name Muscles
• Shape of Muscle– Deltoid: Triangular shaped– Trapezius: Trapezoid shaped– Serratus: Saw-toothed muscle edge– Rhomboideus: Diamond shaped– Orbicularis: Circular shaped– Pectinate: Comblike shaped– Platys: Flat muscle– Quadratus: Square shaped – Gracilis: slender muscle
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Deltoid: Triangular shaped
![Page 21: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/21.jpg)
Trapezius: Trapezoid shaped
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Serratus: Saw-toothed muscle edge
![Page 23: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/23.jpg)
Rhomboideus: Diamond shaped
![Page 24: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/24.jpg)
Orbicularis: Circular shaped
![Page 25: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/25.jpg)
Pectinate: Comblike shaped
![Page 26: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/26.jpg)
Platys: Flat muscle
![Page 27: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/27.jpg)
Quadratus: Square shaped
![Page 28: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/28.jpg)
Gracilis: Slender muscle
![Page 29: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/29.jpg)
Characteristics Used to Name Muscles
• Action of Muscles– Flexor: Decreases angle at joint– Extensor: Increases angle at joint– Abductor: Moves bone away from midline– Adductor: Moves bone toward midline– Levator: Produces superior movement– Depressor: Produces inferior movement– Supinator: Turns palm anteriorly– Pronator: Turns palm posteriorly– Sphincter: Decreases size of opening– Tensor: Makes a body part rigid– Rotator: Moves bone around an axis
![Page 30: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/30.jpg)
Flexor: Decreases angle at joint
![Page 31: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/31.jpg)
Extensor: Increases angle at joint
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Adductor: Moves bone toward midline
![Page 33: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/33.jpg)
Levator: Produces superior movement
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Depressor: Produces inferior movement
![Page 35: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/35.jpg)
Supinator: Turns palm anteriorly
![Page 36: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/36.jpg)
Pronator: Turns palm posteriorly
![Page 37: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/37.jpg)
Sphincter: Decreases size of opening
![Page 38: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/38.jpg)
Tensor: Makes a body part rigid
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Characteristics Used to Name Muscles
• Number of Origins of Muscle– Biceps: Muscle with two origins– Triceps: Muscle with three origins– Quadriceps: Muscle with four origins
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Biceps: Muscle with two origins
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Triceps: Muscle with three origins
![Page 42: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/42.jpg)
Quadriceps: Muscle with four origins
![Page 43: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/43.jpg)
Location of Muscle
![Page 44: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/44.jpg)
Origin and Insertion of Muscle
![Page 45: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/45.jpg)
Origin and Insertion of Muscle
![Page 46: Bio& 241 A&P 1 Unit 3 / Lecture 1. Introduction to Muscles 1.Origin: Attachment of a muscle tendon to the stationary bone. 2.Insertion: Attachment of.](https://reader035.fdocuments.in/reader035/viewer/2022062713/56649ce25503460f949adfe5/html5/thumbnails/46.jpg)
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Extrinsic Muscles of the Eye
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Extrinsic Muscles of the Eye