Muscle Tissue Upcoming events: muscle tissue today muscle tissue NOT on Exam #1 Exam #1 this...
-
date post
19-Dec-2015 -
Category
Documents
-
view
216 -
download
0
Transcript of Muscle Tissue Upcoming events: muscle tissue today muscle tissue NOT on Exam #1 Exam #1 this...
Muscle Tissue
Upcoming events:
• muscle tissue today
• muscle tissue NOT on Exam #1
• Exam #1 this Thursday• Bring a scantron form & a pencil• BE ON TIME!
1. Name this structure
2. Name this structure (be specific)
3. Give one function of the structure in #2 (be specific)
4. List at least 6 movements that theshoulder can make
5. List at least 4 movements that theTMJ can make
Muscle Tissue
• 3 types of muscle tissue• basic histology• What is a muscle fiber?• Connective tissue wrappings• types of muscle attachments• neuromuscular junction• smooth and cardiac muscle
Myoblasts fuse
Skeletal muscle fibers:• multinucleated• striated• excitable• contract• extensible• elastic• wrapped with CT• hypertrophy• atrophy
TendonDeep fascia
EpimysiumEpi = upon, above
PerimysiumPeri = around
EndomysiumEndo = within
Connective tissue wrappings of skeletal muscle
Myo, mys = muscle
Bellies
Insertion
Insertion
Origins Origins
Muscle attachments
Ligaments: bone to boneTendons: muscle to bone
Direct vs Indirect attachment
Fig. 10.15p270a(TE Art)
Neuron release AChElectrical excitationspreads across musclefiber and down T tubules
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?