Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Chapter 6 > Flashcards

Chapter 6 Flashcards

1
Q

Muscle fibers Definition

A

Muscle cells that are long cells

(made of long thin myofibrils)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Myoglobin Definition

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Fascia Definition

A

Muscles covered by connective tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Fascicles Definition

A

Bundles of muscle cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Myofibrils Definition

A

Bundles of myofilaments that contracts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Sacromere Definition

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Involuntary Definition

A

Smooth muscles
Muscles found in the walls of many internal organs

*Aid in function of other organs

(digestive tract, respiratory system, blood vessels)

Cardiac muscles
Found only in the heart

*Functions by contracting to force blood from the heart into the arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Voluntary Definition

A

Skeletal muscles attached to the skeleton

  • Usually work in pairs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Origin Definition

A

Muscle attached to the bone that remains stationary during movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Insertion Definition

A

Muscle attached to bone that moves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Functions of Skeletal Muscles
(5)

A

1.Support the body – maintain our posture
2. Movement of bones, and other tissues
3. Help maintain a constant body temperature
– generates heat
4. Helps move blood through the veins and
lymphatic fluid through the lymphatic
vessels
5. Help to protect vital organs and stabilize
joints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Sacrolemma Definition

A

Plasma membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Sacroplasm Definition

A

Similar to cytoplasm, contains large amount of stored glycogen and myoglobin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Myoglobin Definition

A

Oxygen binding protein similar to hemoglobin, only found in muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Sarcoplasmic reticulum Definition

A

Similar to endoplasmic reticulum, one of its functions is to store Ca2+

(Calcium)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Transverse tubules (T tubules) definition

A

Extension of sarcolemma that come in contact with sarcoplasmic reticulum

17
Q

Actin filaments Definition

A

Filaments that form by two strands of protein actin, Attached to Z line

18
Q

Myosin Definition

A

Thick filaments of protein ,shaped like golf club , with found “head”

19
Q

Cross-bridges Definition

A

Myosin heads bind and detach from thin actin filaments. When bound its called ->

20
Q

Steps of muscle contraction
1-11

A
  1. Action potentials are transmitted through the neurons.
  2. At the end of the neurons neurotransmitters are released
  3. Neurotransmitters bind to receptor on the sarcolemma
  4. The receptors are ion channels that open
  5. An action potential travels through the T tubules
  6. The action potential goes to the sarcoplasmic reticulum
  7. The sarcoplasmic reticulum releases Ca2+.
  8. The calcium binds to the actin filament
  9. This opens up binding site for the myosin to attach
  10. Now the myosin binds to the actin
  11. ATP is needed for the myosin to slide past the actin
21
Q

ATP definition

A

The bonds between phosphate groups are high energy bonds

Biology (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions