Connective Tissue Wrappings &
Attachments of Skeletal Muscle
• Tendons—cord-like
structures
• Mostly collagen fibers
• Attach muscle belly to bone
Figure 6.1
Connective Tissue Wrappings &
Attachments of Skeletal Muscle
• Cells are surrounded & bundled by connective tissue
• Fascia—tough connective tissue, outside of the epimysium of the
muscle belly, that creates a 3-D web around every muscle
Figure 6.1
Connective Tissue Wrappings &
Attachments of Skeletal Muscle
• Cells are surrounded &
bundled by connective tissue
• Epimysium—covers the entire
skeletal muscle (muscle belly)
Figure 6.1
Connective Tissue Wrappings &
Attachments of Skeletal Muscle
• Cells are surrounded &
bundled by connective tissue
• Perimysium—wraps around a
fascicle (bundle) of muscle
fibers
Figure 6.1
Connective Tissue Wrappings &
Attachments of Skeletal Muscle
• Cells are surrounded &
bundled by connective tissue
• Endomysium—encloses a
single muscle fiber
Figure 6.1
Microscopic Anatomy of Skeletal
Muscle
• Sarcolemma—specialized
plasma membrane that
surrounds a myofibril
• Myofibrils—long organelles
inside muscle cell
Per. 1 - The end
REVIEW of SKELETAL MUSCLE STRUCTURE:
Play Doh Model Challenge
• Using the 4 colors of modeling clay, develop a mini
replica of skeletal muscle, including…
•
•
•
•
1 muscle belly
At least 3 fascicles
At least 3 muscle fibers within each fascicle
At least 3 myofibrils within each muscle fiber
Muscle belly
Fascicles
Muscle fibers
Myofibrils
Per. 1 - The end
REVIEW of SKELETAL MUSCLE STRUCTURE:
Play Doh Model Challenge
• Follow Up Questions:
• Which colors did you use to represent each structure?
• Which structure did you construct first? Explain why you did this
• Which part of the muscle wrapping was the most complicated to build? Explain
your answer
• Draw and color your muscle structure and include labeling of the wrappings
and their functions
Muscle belly
Fascicles
Muscle fibers
Myofibrils
Week #6 (11/16-11/20)
Warm Up – Fri, 11/20:
- Review of Muscle #2 & Muscle organization
Anatomy Fun Fact:
As the body gets cold, heat
is generated due to
shivering which causes rapid
muscle contractions.
Pick up:
Skeletal Muscle
Crossword
Textbook
Have out:
Mr. Muscle Man
Muscle Structure
diagram
Homework:
1.
Agenda:
1.
2.
Muscular System Latin Quiz
Skeletal Muscle Crossword Puzzle due Monday
11/23
Learning Goal: I will be able to describe the structure &
function of the Muscular System.
2.
3.
Muscles Quiz #2
(Identification) –
Mon, 11/23
Muscular Sys. Rev.
packet – Wed, 11/25
Muscle System Quiz
#1 (Structure,
Function &
Organization) – Mon,
11/30
Skeletal Muscle Organization
B
A
(structure)
C
(wrapping)
G (wrapping)
E (wrapping)
D
(structure)
F
(structure)
H (structure)
I (wrapping of H)
Name the following
structures &
connective tissue
wrappings of skeletal
muscle.
Per. 3 – needs; go over WU & collect, The end
Bionics Photo Gallery
National Geographic: Bionics
• QUIETLY read the article “Bionics”.
• Annotate the article as you please (symbols, writing in
margins, highlighting).
• Prompt: “We are giving people tools. They are better
than what previously existed. But they are still crude,
like a hammer, compared with the complexity of the
human body. They can’t hold a candle to Mother
Nature.”
– Using your knowledge of the interdependence of organ systems
in the human body & how skeletal muscle is organized & using
direct information about bionics in the article, discuss why this
quote is so truthful.
– 3-paragraph response (opening, body, closing)
• STAPLE your annotated article to your written response
& turn in to the Hmwk Bin!
– DUE by the END of the PERIOD TODAY!