BIO 141 Exam 4 Chapters 9, 10, & 11
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1. 3 types of muscle skeletal, cardiac, smooth
tissue
2. skeletal muscle tis- long, cylindrical striated muscle fibers; cells are multinucleated
sue structure
3. skeletal muscle tis- mostly attached to skeleton/bones
sue location
4. is skeletal muscle voluntary
tissue voluntary or
involuntary?
5. skeletal muscle tis- produces movement of the body
sue function
6. cardiac muscle tis- short, wide, branching striated cardiac muscle cells with intercalated discs;
sue structure cells have a single nucleus or two nuclei
7. cardiac muscle tis- heart
sue location
8. is cardiac muscle involuntary
tissue voluntary or
involuntary?
9. cardiac muscle tis- produces beating of the heart
sue function
10.
, BIO 141 Exam 4 Chapters 9, 10, & 11
Study online at https://quizlet.com/_9m1oen
smooth muscle tis- thin, smooth muscle cells, generally joined by gap junctions; cells have a single
sue structure nucleus
11. smooth muscle tis- walls of hallow organs, as well as in the skin, and the eyes
sue location
12. is smooth muscle involuntary
tissue involuntary
or voluntary?
13. smooth muscle tis- changes diameter of hallow organs
sue function causes hairs to stand erect
adjusts the shape of the lens and the size of the pupil of the eye
14. 5 properties of contractility, excitability, conductivity, distensibility, and elasticity
muscle cells
15. muscle cell contrac- ability of cells to contract. ability of proteins within muscle cells to draw
tility together
16. muscle cell ex- or responsive in the presence of various stimuli; might include chemical signals
citability from the nervous or endocrine systems, mechanical stretch signals, or local
electrical signals. generate electrical changes across the plasma membrane of
the muscle cell
17. muscle cell conduc- when a muscle cells is excited, the electrical changes across the plasma mem-
tivity brane do not stay in one place. instead, they are rapidly conducted along the
entire length of the plasma membrane, similar to how an electrical impulse is
conducted through a copper wire
18. muscle cell disten- muscle cells will rupture when stretched, but muscles cells are ____: they can
sibility be stretched up to three times their resting length without damage
19.
, BIO 141 Exam 4 Chapters 9, 10, & 11
Study online at https://quizlet.com/_9m1oen
muscle cell elastici- muscle cells can also return to their original shape after being stretched. ____
ty is mistaken for stretch, but distensibility, not ____, refers to stretch
20. structure of a skele-
tal muscle fiber
21. sarcoplasmic retic- modified smooth endoplasmic reticulum that forms a weblike network sur-
ulum rounding each myofibril. varies in the three types of muscle tissue
22. t-tubules inward extensions that dive into the muscle fiber and surround each myofibril,
forming a tunnel-like network within the muscle fiber. continuous with the
exterior of the cell and are filled with extracellular fluid
23. sarcomere functional unit of muscle contraction; where muscle tension is produced.
consists of the area of the myofibril from one z-disc to the next.
24. sarcolemma plasma membrane of a muscle fiber
25. glycogen: skeletal glycogen granules are found in the cytosol of both muscles fibers and liver
muscle fiber cells. muscle fibers that depend primarily on glycolysis as their means of ATP
production have large quantities of glycogen in their cytosol. regardless of the
amount of stored glycogen, glycolysis itself can provide adequate ATP for only
about 30-40 seconds of sustained muscle contraction
26. mitochondria: during strenuous exercise, the rate of energy use in skeletal muscles can
skeletal muscle increase by more than 100-fold instantly. to meet this energy demand, muscle
fiber cells contain _______ or the power of the cell
27. myoglobin: skeletal serves in a manner to aid in the inflow of oxygen into cardiac and skeletal
muscle fiber muscle fibers, so that the demand for oxygen is met instantaneously
28.
, BIO 141 Exam 4 Chapters 9, 10, & 11
Study online at https://quizlet.com/_9m1oen
how are thick in compartments called sarcomeres
and thin filaments diagonally
arranged? there are regions where we find only thin filaments, regions where the thin
and thick filaments overlap, and regions that have only thick filaments. patterns
forms alternating light and dark bands, or striations. region with overlapping
filaments is referred to as the zone of overlap, where tensions i generated
during a muscle contraction
29. i band light region of a striation. appears lighter because it contains only thin fila-
ments, which allow more light to pass through them
30. a band dark region of a striation, which contains thick filaments. block more light than
thin filaments.
31. h zone we find both thick and thin filaments in the outer portion of the a band, and
only thick filaments in the middle of the a band. this middle area, which is
slightly larger than the rest of the a band is called ______
32. m line dark line in the middle of the a bands. consists of structural proteins that hold
the thick filaments in place and serve as an anchoring point of the elastic
filaments
33. z-disc dark line in the i bands. composed of structural proteins that have many
functions; they anchor the thin filaments in place and to one another, they
are an attachment point for elastic filaments, and they attach myofibrils to one
another across the whole diameter of the muscle fiber
34. connectin (titin)
Study online at https://quizlet.com/_9m1oen
1. 3 types of muscle skeletal, cardiac, smooth
tissue
2. skeletal muscle tis- long, cylindrical striated muscle fibers; cells are multinucleated
sue structure
3. skeletal muscle tis- mostly attached to skeleton/bones
sue location
4. is skeletal muscle voluntary
tissue voluntary or
involuntary?
5. skeletal muscle tis- produces movement of the body
sue function
6. cardiac muscle tis- short, wide, branching striated cardiac muscle cells with intercalated discs;
sue structure cells have a single nucleus or two nuclei
7. cardiac muscle tis- heart
sue location
8. is cardiac muscle involuntary
tissue voluntary or
involuntary?
9. cardiac muscle tis- produces beating of the heart
sue function
10.
, BIO 141 Exam 4 Chapters 9, 10, & 11
Study online at https://quizlet.com/_9m1oen
smooth muscle tis- thin, smooth muscle cells, generally joined by gap junctions; cells have a single
sue structure nucleus
11. smooth muscle tis- walls of hallow organs, as well as in the skin, and the eyes
sue location
12. is smooth muscle involuntary
tissue involuntary
or voluntary?
13. smooth muscle tis- changes diameter of hallow organs
sue function causes hairs to stand erect
adjusts the shape of the lens and the size of the pupil of the eye
14. 5 properties of contractility, excitability, conductivity, distensibility, and elasticity
muscle cells
15. muscle cell contrac- ability of cells to contract. ability of proteins within muscle cells to draw
tility together
16. muscle cell ex- or responsive in the presence of various stimuli; might include chemical signals
citability from the nervous or endocrine systems, mechanical stretch signals, or local
electrical signals. generate electrical changes across the plasma membrane of
the muscle cell
17. muscle cell conduc- when a muscle cells is excited, the electrical changes across the plasma mem-
tivity brane do not stay in one place. instead, they are rapidly conducted along the
entire length of the plasma membrane, similar to how an electrical impulse is
conducted through a copper wire
18. muscle cell disten- muscle cells will rupture when stretched, but muscles cells are ____: they can
sibility be stretched up to three times their resting length without damage
19.
, BIO 141 Exam 4 Chapters 9, 10, & 11
Study online at https://quizlet.com/_9m1oen
muscle cell elastici- muscle cells can also return to their original shape after being stretched. ____
ty is mistaken for stretch, but distensibility, not ____, refers to stretch
20. structure of a skele-
tal muscle fiber
21. sarcoplasmic retic- modified smooth endoplasmic reticulum that forms a weblike network sur-
ulum rounding each myofibril. varies in the three types of muscle tissue
22. t-tubules inward extensions that dive into the muscle fiber and surround each myofibril,
forming a tunnel-like network within the muscle fiber. continuous with the
exterior of the cell and are filled with extracellular fluid
23. sarcomere functional unit of muscle contraction; where muscle tension is produced.
consists of the area of the myofibril from one z-disc to the next.
24. sarcolemma plasma membrane of a muscle fiber
25. glycogen: skeletal glycogen granules are found in the cytosol of both muscles fibers and liver
muscle fiber cells. muscle fibers that depend primarily on glycolysis as their means of ATP
production have large quantities of glycogen in their cytosol. regardless of the
amount of stored glycogen, glycolysis itself can provide adequate ATP for only
about 30-40 seconds of sustained muscle contraction
26. mitochondria: during strenuous exercise, the rate of energy use in skeletal muscles can
skeletal muscle increase by more than 100-fold instantly. to meet this energy demand, muscle
fiber cells contain _______ or the power of the cell
27. myoglobin: skeletal serves in a manner to aid in the inflow of oxygen into cardiac and skeletal
muscle fiber muscle fibers, so that the demand for oxygen is met instantaneously
28.
, BIO 141 Exam 4 Chapters 9, 10, & 11
Study online at https://quizlet.com/_9m1oen
how are thick in compartments called sarcomeres
and thin filaments diagonally
arranged? there are regions where we find only thin filaments, regions where the thin
and thick filaments overlap, and regions that have only thick filaments. patterns
forms alternating light and dark bands, or striations. region with overlapping
filaments is referred to as the zone of overlap, where tensions i generated
during a muscle contraction
29. i band light region of a striation. appears lighter because it contains only thin fila-
ments, which allow more light to pass through them
30. a band dark region of a striation, which contains thick filaments. block more light than
thin filaments.
31. h zone we find both thick and thin filaments in the outer portion of the a band, and
only thick filaments in the middle of the a band. this middle area, which is
slightly larger than the rest of the a band is called ______
32. m line dark line in the middle of the a bands. consists of structural proteins that hold
the thick filaments in place and serve as an anchoring point of the elastic
filaments
33. z-disc dark line in the i bands. composed of structural proteins that have many
functions; they anchor the thin filaments in place and to one another, they
are an attachment point for elastic filaments, and they attach myofibrils to one
another across the whole diameter of the muscle fiber
34. connectin (titin)
