Answer:
The latent period refers to the period of time, in which no force is generated, that elapses between the generation of an action potential and the beginning of muscle contraction. The contraction phase begins at the end of the latent period and ends at the peak of muscle tension.
Explanation:
:)
During the latent period of isometric contractions, there is no visible change in muscle length. It is the time period between the initiation of a stimulus and the actual start of muscle contraction.
Here is a step-by-step explanation of what occurs during the latent period:
1. The stimulus is received by the muscle fiber, either from a motor neuron or an electrical impulse.
2. The stimulus triggers the release of calcium ions from the sarcoplasmic reticulum.
3. Calcium ions bind to troponin, causing a conformational change in the troponin-tropomyosin complex.
4. This conformational change exposes the binding sites on actin for myosin heads.
5. ATP is hydrolyzed by myosin, providing energy for the myosin heads to bind to actin.
6. Cross-bridge formation occurs, where myosin heads attach to actin filaments.
7. However, during the latent period, there is no visible shortening or movement of the muscle fiber.
8. This is because the force generated by the myosin heads is balanced by an opposing force within the muscle, preventing any visible movement.
9. The opposing force is created by the tension in the series elastic elements of the muscle, such as the tendons and connective tissues.
10. This tension allows the muscle to maintain a stable position and prepare for the upcoming contraction.
11. The latent period typically lasts for a few milliseconds, depending on the type of muscle and the intensity of the stimulus.
12. After the latent period, the muscle enters the contraction phase, where the myosin heads continue to bind and detach from actin, causing muscle shortening and generation of force.
In summary, the latent period of isometric contractions is the time between the stimulus and the start of visible muscle contraction. During this period, the muscle prepares for contraction by releasing calcium ions, allowing myosin to bind to actin. However, there is no visible movement because the force generated by the myosin heads is balanced by an opposing force within the muscle.
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How are igneous rocks classified?
Answer:
Igneous rocks may be simply classified according to their chemical/mineral composition as felsic, intermediate, mafic, and ultramafic, and by texture or grain size.
Explanation:
Because im not an idiot jk becuase i just took a test on those.
How are prokaryotic cells different from eukaryotic cells?
Answer:
prokaryotic cells does not have a nucleus while eukaryotic cells do, and prokaryotic cells reproduce axsexually while eukaryotic cells reprofuce sexually, lastly prokaryotic cells are smaller than eukarytic cells
Explanation:
Kawana knows that the sandwich she eats for lunch will give her energy for lacrosse practice that afternoon, but she wonders exactly how the food will reach her cells and enable her muscles to move. Give a brief description of how energy from food is made available for cellular use.
Answer:
In my own point of view, energy from food can be made available for cellular use because the food (the sandwich) she eats for lunch contains balanced diet. In which she eats through the mouth, swallows the food which goes down the oesophagus and it reaches the stomach and digestion processes starts. The digested food is stored in the body and is thereafter made available for cellular use
Why do saturated fatty acids have straight structures, while unsaturated fatty acids have bent structures
Answer:
The answer is C
Explanation:
Saturated fatty acids have single carbon-to-carbon bonds.
Answer: saturated fatty acids have single carbon-to-carbon bonds
Explanation:
apex notes
What does the disappearanse of several small Solomon Islands show? Should other nations be
concerned about their disappearance? Explain your answer.
Help
Which of the following are human organs? Select all that apply.
-Blood
-Skin
-Stomach
-Tongue
The muscular organ that digests food, called the stomach. It is a component of your digestive system (GI). When you eat, your stomach contracts and releases the acids and enzymes needed to break down the meal. Thus, option C is correct.
What is function of Stomach?In the anterior part of the abdominal cavity in most vertebrates, the stomach is a sac-like enlargement of the digestive system situated between the esophagus and the small intestine.
Before food is delivered into the intestine, it is mechanically distributed and stored in the stomach as a temporary container.
Carbohydrates are chemically digested in the stomach. Since the stomach only makes protease and lipase (pepsin breaks down proteins into peptides),
it is unable to chemically digest carbohydrate (gastric lipase that digests lipids into glycerides).
Therefore, Stomach is digestive organ in human
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Igneous rocks are formed from?
A=cooling magma
B=eroded rock
C=metamorphic rock
D=heat and pressure. I NEED HELP ASAP WILL MARK YOU BRAINILY
Answer:
A cooling magma
Explanation:
like the person said above they are formed by A- cooling magma.
I need some notes about cell transport notes
Answer:
Cell transport notes? can you clarify???
Explanation:
The muscle in Lane's arm would best be described as which of the following?
An organ system
An organ
An organism
An organism
A tissue
Answer:
tisuee\
Explanation:
Do you think that our society should try to genetically “engineer” babies? Do you think that one day we will? Explain your answers.
Im giving out brainliest!
Answer:
I think they should not genetically engineer babies because it is inhumane, they might as well make robots and forget about humans. Sadly I think one day we will, if they are able to implant a baby in a woman, they will soon be able to make a baby without a womb.
Answer:
I don't think we should "engineer" babies, they have their own life and changing that to make another that God did not make will turn out weird. God creates the babies, only he can make them perfect. But sadly, yes, I think people will try to "engineer" babies.
You are sitting in your bedroom and all of a sudden you see a bright glow in the sky. Then, an object blasts through your roof and makes a huge dent in the floor next to you. You look at the object and you can see it is a rock about the size of a pebble that appears to be very hot. A group of people arrives to determine what happened. Whose statement uses the correct term for the object?
Answer:
A meteorite?
Explanation:
It was small and hot because friction from falling to Earth burned it up.
Can you add more detail? It says whose statement uses the correct term, but there are no statements.
Answer:
Meteor
Explanation:
A meteor is a huge rock that blasts through the sky. A meteor goes so fast, it creates a streak of fire. At night, you can sometimes see a lot of these in the sky which is called a meteor shower.
In the structural organization of the central nervous system, which is an organ?
A) nerve
B) neuron
C) gray matter
D) brain
Answer:
D) brain
Explanation:
The brain is an organ, and the body's control center.
Which complex is not involved in the establishment of conditions for atp synthesis?.
Answer:
photosystem II
Explanation:
Photosystem II (or water-plastoquinone oxidoreductase) is the first protein complex in the light-dependent reactions of oxygenic photosynthesis. It is located in the thylakoid membrane of plants, algae, and cyanobacteria.
wikipedia.
What do these organelles do and are they found in animal or plant cells?
Ribosomes
Nucleus
Mitochondria
Cell Membrane
Chloroplast
Vacuole
Cytoplasm
Answer:
Ribosome ✔ both animal and plant cells - Produces Proteins Nucleus- animal cell-Directs cell activity
Mitochondria ✔ both animal and plant cells -Breaks down sugar molecules that supply energy to the cell
Cell membrane ✔ both animal and plant cells - Protects the cell and controls what enters and leaves the cell
Chloroplasts ✔ plant cell only-Captures the energy from sunlight and converts it into chemical energy
Vacuoles ✔ both animal and plant cells -Stores water, waste products, food, etc.
Cytoplasm ✔ both animal and plant cells -Supports and protects organelles in the cell
Explanation:
In certain ecosystems where light is not available, a process converts chemical energy into high-energy carbohydrates. What is this process called?
A. photosynthesis
B. dark reactions
C. chemosynthesis
D. chemical bonding
Answer:
The process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugars is called photosynthesis. The process in which autotrophs use chemical energy to produce carbohydrates is called chemosynthesis.
Explanation:
what is it called when you make predictions about something not yet recorded?
Answer:
Hypothesis
Explanation:
In what respect is a mycelium and a fruiting body similar?.
Answer:
Both are made of hyphae
Explanation:
Does this help you????
This type of data is descriptive and does not involve numbers.
Answer:
qualitative
Explanation:
what caused the abolishment of the French monarchy
Answer:
Food Shortages and Economic crisis
Explanation:
Food shortages and economic troubles sparked the French Revolution in 1789. In August 1792, King Louis and Queen Marie-Antoinette were imprisoned, and the monarchy was abolished in September. Louis was tried and sentenced to death by a slim majority in January 1793.
Explain why insect farming is more sustainable than raising large livestock, such as cattle or chickens. Do you think more Americans will embrace the idea of eating insects? Why or why not?
Answer:
The major environmental advantages of insect farming compared to livestock production are as follows: (1) less land and water is required; (2) greenhouse gas emissions are lower; (3) insects have high feed conversion efficiencies; (4) insects can transform low-value organic by-products into high-quality food or feed.
Insects release fewer greenhouse gases than traditional livestock. Rearing traditional livestock accounts for 18% of greenhouse gas emissions (pdf, p . 63), which trumps emissions by the transportation industry. ... Insects also release much less ammonia and methane than pigs and cattle.
Explanation:
Hope this helps u
Crown me as brainliest:)
The cell membrane
Encloses the contents of a cell
All of the above
Allows material to enter and leave the cells
Is selectively permeable
Can someone explain how the process of bioaccumulation happens?? ‼️10 points‼️
Answer:
Bioaccumulation is the process by which toxins enter the food web by building up in individual organisms, while biomagnification is the process by which toxins are passed from one trophic level to the next (and thereby increase in concentration) within a food web.
Explanation:
PLEASE HELP WILL MARK BRAINLIEST
How is temperature related to the physical change of a substance? PLEASE MAKE THE ANSWER SCHOOL APPROPRIATE
Answer:
As temperature increases, the atoms or molecules in a substance gain energy.
Explanation:
Hope it helps!!!!
Help me please i don't understand this
Answer:
1. D
2. A
3. C
4.B
Explanation:
hope this help
why does the coronavirus look different to black american? (if you don’t know, don’t answer.)
Explanation:
It looks different because of there color and because how do they behave
The table shows the commonly eaten foods of some organisms.
Commonly Eaten Foods List
Group Commonly Eaten Foods
A vegetables, meat, chicken
B insects, fruits, seeds
C grasses, barks, twigs, acorn
D ladybugs, caterpillars, flies, mosquitoes
Answer:
The answer is B.
Explanation:
Answer:
The answer is A and B.
Explanation:
Full Question: Which groups contain both primary and secondary consumers?
The answer is A and B.
Just took the test in Buzz.
Helpppppp meeeeeeereeeeeeee
Answer:
how
Explanation:
how do u want me to help u just tell
Why do the neuron and epithelial cell look so different?
They have a different function in the body.
A different section of DNA is activated in the nucleus.
They were created from different parent cells.
A different tissue results from a collection of each type of cell.
More time was spent creating the neuron.
Answer:
Nerve cell shapes vary according to the number, branching and disposition of their projections or dendrites, collectively known as arborization. This determines their capacity for interacting with their environment and with other nerve cells or neurons, hence their computational ability and roles.
Explanation:
Nerve cell shapes vary according to the number, branching and disposition of their projections or dendrites, collectively known as arborization. This determines their capacity for interacting with their environment and with other nerve cells or neurons, hence their computational ability and roles.
Which of the following makes the biggest difference from one organism to the next?
please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
{{-Hello Pumpkin-}}
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I think it is the following;
Reproduction
Multicellular or Unicellular
Autotroph or Heterotroph
------------------------------------------
I am so sorry if this is not correct.
What structure in the female reproductive system produces eggs?
Vagina
Ovary
Fallopian tube
Cervix
Ovary structure in the female reproductive system produces eggs. Thus, the correct option is B.
What is female reproductive system?The uterus, fallopian tubes, ovaries, and the vagina are a woman's internal reproductive organs. The muscular, hollow tube known as the vagina connects the uterus to the vaginal opening. The muscular walls of the vagina allow it to expand and contract.
The primary roles of the female reproductive system are to produce eggs (ova) that can be fertilized and to create the environments and space necessary for a baby to grow. The female reproductive system also possesses the components required for a man's sperm to interact with a woman's ova in order for this to occur.
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