Biology: Muscle Tissue Functions Essay examples

Submitted By corynja29
Words: 557
Pages: 3
Open Document
Sliding Filament Theory and Muscle Tissues study guide
Front

Back

Binding of the myosin head sequentailly prevents "_____________" of the thin filament. This makes it seem that the myosin is "_______" the actin ______.

back-sliding

walking

forward

Calcium ions are moved back into the SR by the process known as ____________ which is facilitated by specialized _________________. This process requires___.

Active transport

Calcium Ion Pumps

ATP

During muscle contraction, the ________shortens but the __________remains the same.

Sarcomere

Myofilament

Flexing the myosin head provides what is known as the ________.

power stroke

Hydrolysis of ATP returns the myosin head to its ____________conformation.

high-energy

Name 3 roles of ATP in the contraction of muscle.

Energizes power stroke of myosin head

Disconnects myosin head from actin

Actively transports calcium ions back to the sarcoplasmic reticulum

The myosin head contains binding sites for what 2 molecules?

Actin

ATP

The thick filament is composed of what molecule?

Myosin

True or False.
When a muscle contracts, all crossbridges are synchronized to bind and disconnect at the same time.

False. Not all crossbridges will bind and disconnect at the same time, because is this were done, the thin filament would never be moved forward, contracting the sarcomere. The myosin heads bind at different times to prevent the thin filament backsliding so as to "walk" the filament continually forward.

Waht are the 3 molecules that make up the thin filament?

Actin

Tropomyosin

Troponin

What are the 6 steps of the cross bridge cycling?

Influx of calcium ions

Binding of myosin to actin

Power stroke, causing sliding of thin filaments

Binding of ATP to cross bridge

Hydrolysis of ATP

Transfer of calcium ions back to the SR

What is the name of the condition in which muscles become rigid after death?

Rigor Mortis

What molecule is connected to the z-line?

Actin

What molecule must bind to the myosin head in order for it to disconnect from the actin?

ATP

What triggers the condition of body rigidity posthumously?

No ATP synthesis=ATP depletion=No disconnect of myosn head from actin, keeping muscles in a temporary (several hours) contracted state.

What triggers the release of calcium ions?

Action potential is passed down the T-tubules to the
Show More

Related Documents: Biology: Muscle Tissue Functions Essay examples

Bio 226 StudyQ Ch 9 Essay

Biology 226/Summer 2015 Dr. Beth Braun/Study Questions – Chapter 9 Reading in Chapter 9: Pages 276-285; 289-307 1. Name the 3 main types of muscle tissue, and the key characteristics of each type. 2. List and briefly describe the characteristics of all muscle tissue. 3. List and briefly describe the functions performed by muscle tissue. 4. What is another name for a skeletal muscle cell? 5. Name and briefly describe each level of structural organization of muscle tissue, starting…

Words 686 - Pages 3

Fake: Cellular Differentiation and Cells Essay

Cell division is important because it is the way healthy body cells are expected to function and aid in the growth of different body parts.. Without cell division the body dies. 2.5 the cell cycle 2.7 cell division gone wrong Cancer cells are cells gone wrong — in other words, they no longer respond to many of the signals that control cellular growth and death. Cancer cells originate within tissues and, as they grow and divide, they diverge ever further from normalcy. Over time, these…

Words 1324 - Pages 6

Kinesiology Personal Statement

well as the muscles. In addition, through Exercise Science I will gain more knowledge about the physical activity as well as the health of the human body. Furthermore, I will be able to pursue my intended career of an athletic training and eventually continue my education and become a physical therapist. Through kinesiology, I will be able to learn about the uniqueness of biology, the human body, and how every single bone, muscle, and tissue are needed in order for the body to function properly. This…

Words 442 - Pages 2

Types Of Tissue In The Body

Types of Tissue in the body: 1. Epithelial tissues - are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception. 2. Connective tissues - bind structures together, form a framework and support for organs and the body as whole, store fat, transport substances, protect…

Words 1746 - Pages 7

Essay On Stem Cell Therapy

Stem cell therapy regenerates heart muscle damaged from heart attacks in primates University of Washington April 30, 2014 Heart cells created from human embryonic stem cells successfully restored damaged heart muscles in monkeys. The results of the experiment appear in the April 30 advanced online edition of the journal Nature in a paper titled, "Human embryonic-stem cell derived cardiomyocytes regenerate non-human primate hearts." The findings suggest that the approach should be feasible…

Words 1010 - Pages 5

Skeletal System Research Paper

system includes all bones ans joints of the human body. All bones of the human body are made up of lots of cells, protein fibers and also minerals. The skeleton is their to support the bones and also to protect the tissues that are also in the body. This system also has points for muscles for joints to move. red bone marrow inside of each bone helps create new blood cells. All of the bones also hold calcium, iron, and energy to help create fat. The skeletal system grows all the way through childhood…

Words 1612 - Pages 7

Unit 23 Q2-17

Q2-17. The chemical principles described in this chapter are important because all cells are made up of chemicals. They may be very diverse, but the reactions all follow the same rules. To understand the complexity of cell biology, we must first understand the basic chemical principles in this chapter. Q2-19. Noncovalent bonds specify the shape of macromolecules. Hydrogen bonds, Electrostatic attractions, Van Der Waals attractions, and hydrophobic interactions Q2-20. Amphipathic molecules are molecules…

Words 263 - Pages 2

Blood Essay

science which aims to understand the mechanisms of living, from the molecular basis of cell function to the integrated behaviour of the whole body. Reference http://www.understanding-life.org Physiology is the branch of biology that deals with the normal functions of living organisms and their parts. Organ system Organ system is a group of organs that work together to perform a certain task or complex function. We have 10 (Ten) major organ systems of the body and they are listed below, along with…

Words 3024 - Pages 13

Essay on Biology Review

BIOLOGY REVIEW Cells are the basic unit of life and often combine with other cells to form tissues. 3. The image above is of a plant cell. You can tell by the shape of the cell. Plant cells tend to be rectangular shaped while animal cells are circular. Plant cells have a cell wall and have a large central vacuole. 5&7. In the cell cycle, the cell grows and prepares for cell division. The cell is in interphase when it is preparing for division. Cell division involves the splitting of the nucleus…

Words 442 - Pages 2

8 29 Biology Chapter 1 and 20 Essay

Fundamentals of Biology 1. Biology: Exploring Life 1.1. All forms of life share common properties 1.1.1. 7 properties we associate with life = order-life is organized (cells are organized), reproduction (pass on DNA), growth and development, energy processing, regulation (of their internal environment), response to the environment, evolutionary adaptation 1.2. Hierarchy of organization 1.2.1. Biosphere  Ecosystem  Community  Population  Organism  Organ system  Organ  Tissue  Cell  Organelle…

Words 759 - Pages 4