1. Movement and the Somatic Nervous System Jim Pierce Bi 145a Lecture 8, 10-11

4. Force Generating Axis Deltoid Muscle

5. Force Generating Axis Fiber Force Vectors

6. Force Generating Axis Muscle Force

8. Types of Muscle Strap (a.k.a. Parallel) Fusiform (a.k.a. Spindle Shaped) Unipennate Bipennate Multipennate

10. Types of Muscle

12. Force Generating Axis Tendon / Insertion

15. Gluteus Maximus

16. Gluteus Maximus Clench your butt - Notice your knee move When you use the muscle, the output is through the tendon

17. Gluteus Maximus When your primary goal is walking, You will still get “ butt movement”

19. Gluteus Minimus During relaxation, the femur neck supports body weight

20. Gluteus Minimus During contraction the femur head rotates around the hip joint

25. Peripheral Nerve Axons

26. Peripheral Nerve

34. Motor System

38. Lower Motor System Lower Motor Neuron

41. Neuromuscular Junction Muscle Synapse

52. Lower Motor System

54. Upper Motor System EXECUTE PLAN

55. Upper Motor System PLAN START AND STOP EXECUTE

56. Upper Motor System PLAN START AND STOP COORDINATE EXECUTE

63. Cortex Carefully looking at the grey matter, we find cells in layers

64. Cortex If we look closely at any cortex… We find an important cell The Pyramidal Cell

70. Upper Motor System Pre-Motor “ FLEX ARM” UMN – Hand “ Fist” UMN – Wrist “ Turn in” UMN – Elbow “90 Degrees” UMN – Shoulder “Out to Side” UMN – Tricep “ Really Contract” UMN – Bicep “Really Contract” LMN - Deltoid LMN – Hand Intrinsics LMN – Wrist Flexors LMN - Tricep LMN - Bicep LMN - Latissimus

72. Upper Motor System

77. Upper Motor System Cerebellum

83. Basal Ganglia

84. Basal Ganglia Circuit GLOBUS PALLIDUS is INHIBITORY CAUDATE, PUTAMEN, and SUBSTANTIA NIGRA are INHIBITORY

88. Upper Motor System

89. Questions?