Muscle Tissue Slides Flashcards
Identify Muscle Fiber Type
White muscle fibers = light stained
Red muscle fibers = darker stained
(NADH-TR stain)
Identify SR, S, and M structures
SR = sarcoplasm
S = sarcomere
M = myofibrils
(Electron Microscope)
What does this image show?
neuromuscular junction
MUSCLE SPINDLE
Identify the structures indicated with arrows
What type of muscle is this?
What type of section(view) is it?
Skeletal Muscle
- transverse section
Identify the type of muscle tissue.
Name the 3 layers indicated.
- epimysium
- endomysium
- perimysium
What are the 2 tissues indicated here?
- tendon (dense regular connective tissue)
- skeletal muscle
Identify the structures indicated by Nu, Z, I, H, A, and Fi.
Nu = nucleus
Z = Z disk
I = I band
H = H band
A = A band
Fi = fiber (of muscle)
Identify the structures indicated in red.
Mf = Myofilament
SR = Sarcoplasmic Reticulum
What type of muscle tissue is this?
What typs of section(view) is this?
cardiac muscle
- transverse section
What type of tissue is this?
What type of nucleus does it have?
cardic muscle
- single, central nuclei
Identify the numbered structures in this cardiac tissue.
- mitochondria
- myofibril
- Sarcoplasmic Reticulum (SR)
What type of muscle tissue is this?
What are the dot-like structures?
Atrial Cardiac Muscle
- atrial granules
Where are the intercalated discs in this cardiac tissue?
intercalated discs make “staircases”
Based on their location in the IC discs, what are A, B and C?
A = fasciae adherens
B = desmosomes
C = gap junctions
What type of muscle?
What are the red structures?
SMOOTH MUSCLE
N = nucleus
DB = dense bodies
C = capillaries (extracellular)
What type of tissue/cells?
What is it’s function?
Myoepithelial Cells
- contractions forces glands to secrete their products
What type of muscle?
cardiac muscle
What type of muscle?
Smooth Muscle
What type of muscle?
Smooth Muscle
(cross section)
What type of tissue?
What structures are numbered?
SKELETAL MUSCLE
- nuclei of muscle fibers
- striated muscle fibers
- nucleus of fibroblast (in endomysium)
- endomysium
- perimysium
- epimysium
What type of muscle?
Name the structures.
SKELETAL MUSCLE
- muslce fiber
- myofibrils
- nucleus of muscle fiber
- A-bands
- Z-lines
- I-band
- Sarcomere
Identify the structures in this neuromuscluar junction.
- axon terminal
- synaptic vesicle
- neurotransmitter
- synaptic cleft
- sarcolemma of muscle fiber
- T-tubule (Transverse Tubule)
- Calcium ions
- Sarcoplasmic Reticulum (SR)
What type of mucle?
Identify the structures.
CARDIAC MUSCLE
- intercalated discs
- Nuclei of muscle fiber
- cardiac muscle fiber
- mitochondrion
