06 - Muscle Tissue.pdf - HISTOLOGY ATLAS Muscle Tissue I....

Soft palate, H&E.
Muscle Tissue
J. Bendinger
I
NDIANA
U
NIVERSITY
S
CHOOL OF
M
EDICINE
H
ISTOLOGY
A
TLAS
2018
Muscle Tissue
I. Introduction
II. Keywords
III. Slides
A. Muscle
1. Striated
a. Skeletal
i. Development
ii. Structure
iii. Organization
b. Cardiac
i. Development
ii. Structure
iii. Organization
2. Smooth
a. Development
b. Structure
c. Organization
B. Muscle-like cells
1. Myoepithelial cells
2. Myofibroblasts
3. Myoid cells
4. Pericytes
IV. Summary

Slide 44 (NW): Cardiac Muscle, H&E
Slide 132 (NW): Small Intestine, H&E
Slide 92 (NW): Larynx, H&E
Muscle is one of the four basic tissues of the body
(with epithelium, connective, and nervous tissue).
It is highly cellular and vascular tissue specialized
for contraction via the interaction of myofilaments.
It is responsible for movement of the body and
changes in the size and shape of organs.
Individual muscle fibers (cells) are categorized as
either striated (skeletal or cardiac) or smooth
based upon the arrangement and appearance of
their contractile myofilaments (actin and myosin).
Muscle Tissue
I. Introduction
II. Keywords
III. Slides
A. Muscle
1. Striated
a. Skeletal
i. Development
ii. Structure
iii. Organization
b. Cardiac
i. Development
ii. Structure
iii. Organization
2. Smooth
a. Development
b. Structure
c. Organization
B. Muscle-like cells
1. Myoepithelial cells
2. Myofibroblasts
3. Myoid cells
4. Pericytes
IV. Summary

Keywords
A-band
Branching fibers
Cardiac muscle
Cross-striations
Endomysium
Epimysium
Fascicle
I-band
Intercalated disc
Muscle fiber
Myoblast
Myocardium
Myocytes
Myofibrils
Myotube
Perimysium
Sarcolemma
Skeletal muscle
Smooth muscle
Striated muscle
Muscle Tissue
I. Introduction
II. Keywords
III. Slides
A. Muscle
1. Striated
a. Skeletal
i. Development
ii. Structure
iii. Organization
b. Cardiac
i. Development
ii. Structure
iii. Organization
2. Smooth
a. Development
b. Structure
c. Organization
B. Muscle-like cells
1. Myoepithelial cells
2. Myofibroblasts
3. Myoid cells
4. Pericytes
IV. Summary

Slide 43 (NW): Muscle – 3 Types, H&E
Slide Overview
Cardiac muscle Smooth muscle Skeletal muscle
Characteristics:
 Cross-striations
 Central, round nucleus
 Branching fibers
 Intercalated discs
Characteristics:
 Central, elongated nucleus
 Spindle-shaped cells
Characteristics:
 Cross-striations
 Peripheral, elongated nuclei
Muscle Tissue
I. Introduction
II. Keywords
III. Slides
A. Muscle
1. Striated
a. Skeletal
i. Development
ii. Structure
iii. Organization
b. Cardiac
i. Development
ii. Structure
iii. Organization
2. Smooth
a. Development
b. Structure
c. Organization
B. Muscle-like cells
1. Myoepithelial cells
2. Myofibroblasts
3. Myoid cells
4. Pericytes
IV. Summary

Slide 159: Fetal Mouse Head
Look in the oral cavity at the
tongue to see developing
skeletal muscle
Brain
Cartilaginous nasal septum
Developing bone of mandible
Mesenchyme
Hair follicles in skin
Slide Overview
All muscle tissue arises from mesenchyme within various parts of the embryo and involves the formation of
myocytes (either skeletal, cardiac, or smooth) from myoblasts . However, the overall process is unique for each