Download IP Anatomy Review

Name: _______________________________________________ Period: _____________
Partner/s: _______________________________________________________________
Interactive Physiology-Muscular System-Anatomy Review
Date: ______________
Use interactive physiology and textbook pages 280-287 to complete the following. Pay special attention
to Table 9.1 on page 282, diagram on page 283 and 285
Muscle Type
Shape of cell
# of nuclei
Striations
Control
Cardiac
Skeletal
Smooth
Study Questions on Anatomy Review: Skeletal Muscle Tissue
1. (P1.) What is the main function of skeletal muscles?
2. (P 3.) List the three types of contractile cells of the body.
_____________________________ ___________________________ ________________________
3. Match the following types of contractile cells to their shape (branching, elongated, spindle-shaped):
___________________ a. Skeletal muscle cells
___________________ b. Cardiac muscle cells
___________________ c. Smooth muscle cells
4. Match the following types of contractile cells to characteristics of nuclei & presence or absence of striations:
Cardiac Muscle Cells
Smooth Muscle Cells
Skeletal Muscle Cells
___________________ a. presence of visible striations & single, centrally-located nuclei
___________________ b. presence of visible striations & multiple peripheral nuclei
___________________ c. absence of visible striations & single, centrally-located nuclei
5. (P 4.) What is the name of the structure that attaches skeletal muscles to bones?_____________________
6. (P 5.) Bundles of skeletal muscle cells are called _____________________________.
7. The connective tissue which immediately surrounds an entire muscle is called _______________________
and the connective tissue around the fascicles is called ________________________.
8. (P 6.) What is the function of endomysium?__________________________________________________
_______________________________________________________________________________________
9. (P 7.) Also see textbook pages 284,287, and picture on 288
Triad
T tubules
Sarcolemma
Muscle fibers
Sarcoplasmic reticulum
___________________
Match these terms to their description:
Terminal cisternae
Mitochondria
Myofibril
a. Sac-like regions of the sarcoplasmic reticulum that contain calcium ions.
___________________
b. Sites of ATP synthesis.
___________________
c. Plasma membrane of the muscle cell.
___________________
d. Alternative name for skeletal muscle cells.
___________________
e. Interconnecting tubules of endoplasmic reticulum that surround each
myofibril.
___________________
f. A group of one T tubule lying between two adjacent terminal cisternae.
___________________
g. Invaginations of the sarcolemma that project deep into the cell.
___________________
h. Contains the contractile filaments within the skeletal muscle cell.
10. (P 8.) What are the names for the two types of filament in a myofibril?
__________________________________
_________________________________
11. (P 9.) What creates the skeletal muscle cell's striated appearance?_________________________________
______________________________________________________________________________________
12. Match the following:
A band
I band
H zone
______________ a. Contains only thin filaments.
______________ b. Contains only thick filaments.
______________ c. Contains both thin and thick filaments.
13. Perpendicular to the myofilaments are the Z lines and the M lines. The Z lines connect the _____________
filaments and the M lines connect the _____________ filaments.
14. The region of the myofibril between two Z lines that is the contractile unit of a muscle cell is called a
_______________________
15. (P 10.) Arrange the following from smallest structure to largest structure:
Muscle cell or muscle fiber
Myofilaments
Fascicle
Whole skeletal muscle
Myofibril
smallest: ____________________________________
___________________________________
___________________________________
__________________________________
largest:
2.
__________________________________
What attaches muscles to bone? ___________________________________.
3.
The whole muscle is composed of muscle cells (fibers) grouped in bundles called ______________.
4.
Name the connective tissue coverings surrounding the following:
Whole muscle __________________
Fascicles __________________
Muscle cell __________________
5.
Match the following three terms with their definitions by drawing lines from word to definition:
Sarcolemma
- endoplasmic reticulum in muscle cell
Sarcoplasmic reticulum
- intracellular fluid around organelles
Cytosol
- plasma membrane of muscle cell
6.
Match the following three terms with their definitions by drawing lines from word to definition:
Terminal cisternae
- T-tubule + 2 terminal cisternae
T-tubules
- part of sarcolemma—carries action potential
Triad
- part of sarcoplasmic reticulum—stores calcium ions
7.
Myofibrils consist of contractile proteins called ______________________
Name the two types and what they’re composed of:
_______ filament composed of ___________________
_______ filament composed of ___________________
8.
Arrangement of myofilaments. Give the letter name of each band:
Dark band 
Light band 
___ band
___ band
Match two definitions with each band:
_____ contains only thin filaments
_____ contains both thick and thin filaments
_____ defined by length of thick filament
_____ defined as distance between two thick filaments
9.
Define the following terms:
Z line (disc) _____________________________________________________
H zone _________________________________________________________
10.
What happens to these areas during contraction?
Z line (disc) _____________________________________________________
H zone _________________________________________________________
11.
Define these two terms:
M line _________________________________________________________
Sarcomere ______________________________________________________
________________________________________________________________