Muscle Tissue Events this week: muscle tissue and muscle assignment #1 due on Thursday at 1:30pm Exam #1 next Tuesday April 18 th Bring a scantron form.

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Muscle Tissue Events this week: muscle tissue and muscle assignment #1 due on Thursday at 1:30pm Exam #1 next Tuesday April 18 th Bring a scantron form & a pencil

OH

Muscle fiber = muscle cell

Tendon Deep fascia epimysium perimysium endomysium

Bellies Insertion Origins

Aponeurosis

Bellies Insertion Origins

Sarco = muscle myofilament mitochondria T tubule Terminal cisternae SR Sarcoplasm: glycogen & myoglobin sarcolemma

Fig (TE Art) Synaptic vesicles (containing ACh) Motor end plate

Fig p270a(TE Art) Neuron release ACh Electrical excitation spreads across muscle fiber and down T tubules

Terminal cisterna Ca 2+

Fig. 10.4(TE Art)

Rigor Mortis What is rigor mortis? Why do the muscles contract after death? Why do they remain contracted for up to 24 hours? Why does rigor mortis only last 24 hours? Think about this tonight!!

Fig b

Fig (TE Art) Muscularis externa Mucosa Circular layer Longitudinal layer Submucosa Epithelium Lamina propria Muscularis mucosae

Fig (TE Art) Autonomic nerve fibers Varicosities Gap junctions Synapses Autonomic nerve fiber Multiunit smooth muscle Single-unit smooth muscle