Your respiratory muscles contract each time you exhale. TrueFalse

QUESTION POSTED AT 14/01/2020 - 03:05 PM

Answered by admin AT 14/01/2020 - 03:05 PM

False,your respiratory muscle expand each time when you exhale.
Post your answer

Related questions

Which of the following is not true concerning the energy harnessed by humans throughout history? a. Early hominids harnessed the least energy, just that of their own bodies. b. Fire let humans increase their energy use tenfold. c. Neolithic farmers were able to harness the energy of animals. d. Modern humans use more than a hundred times the energy of early humans.

Correct answer choice is :


B) Fire let humans increase their energy use tenfold.


Explanation:


Solar energy is just the light and heat that come from the sun. People can harness the sun's energy in a few various ways. Photovoltaic cells, which change sunlight into electricity. Solar thermal technology, where heat from the sun is utilized to make hot water or steam. The human power handled to be all the heat. 150 years ago, stocks that relied on human energy such as the bicycle, pedal-powered machine or stitching machine could be found in most homes.  But humans release energy that can easily be provided by our daily behavior.

ANSWERED AT 21/01/2020 - 09:35 AM


QUESTION POSTED AT 21/01/2020 - 09:35 AM

Compare respiratory systems of earthworm,frog and squid.explain how the specimen breathes and which organ are involved.

Answer:

Earthworm: Gas exchange through skin  

Snake: epiglottis, trachea, and nostrils  

Frog: gills, skin or underdeveloped lungs

Squid:  through the mantle

Explanation:

Earthworm uses its skin to gas exchange.

Snakes have external nares, nasal cavity, internal nares, glottis, trachea, bronchi, lung(s) and air sac. they breath  

All frogs go through a process called metamorphosis, where they use gills however mature frogs lose gills and bring oxygen into their bodies through underdeveloped, lungs. Skin also helps them to use oxygen from water.

The squid has gills in their mantle. Water enters into the mantle from the mantle opening. Gas exchange takes place through the water.

ANSWERED AT 21/01/2020 - 09:12 AM


QUESTION POSTED AT 21/01/2020 - 09:12 AM

Why do classification systems change over time? A.Scientists find new evidence in their studies. B.Scientists use old methods of classification. C.Scientists repeat experiments and find no changes. D.Scientists find similar evidence to previous work.

A.Scientists find new evidence in their studies.

When scientists do find new empirical evidence to revise the current findings, they would do so. They would correct them which by either supporting and implying more results to the current study, or negating the study by abandoning it then resulting to a more useful approach. 

ANSWERED AT 21/01/2020 - 09:06 AM


QUESTION POSTED AT 21/01/2020 - 09:06 AM

After my broken arm healed and my cast was removed, I found that my muscles had atrophied and it was difficult to use them in the same way I had before my injury. This statement refers to which of the SPORT training principles? Specificity Progression Overload Reversibility

Answer:

Option D, Reversibility

Explanation:

Reversibility training in any physical training process is a way by means of which the lost sensitivity or functionality of any sense organ is regained through exercise.

Basically in this process of training, an athlete tries to regain the  lost effect of training after they has stopped exercising.

In this case the lost effect of removed cast and broken arm is tried to be  recovered through physical training known as Reversibility

Hence, option D is correct

ANSWERED AT 21/01/2020 - 08:59 AM


QUESTION POSTED AT 21/01/2020 - 08:59 AM

Cardiac muscles are considered smooth muscles. true or false

Cardiac muscles are considered smooth muscles.  

False

Cardiac muscle with skeletal and smooth muscle are the three main types of muscles. Cardiac muscles are specialized form of muscles that contract repeatedly to provide circulation of blood throughout the body. Cardiac muscles are found only within the heart while smooth muscles can be found in the stomach and intestine.


ANSWERED AT 21/01/2020 - 08:30 AM


QUESTION POSTED AT 21/01/2020 - 08:30 AM

Which of the following could be contracted from airborne germs? A. chicken pox B. e coil C. hepatitis a D. gonorrhea

The only option that could be contracted from airborne germs is A. chicken pox. It's a very contagious desease that forms itchy blisters on skin. Also chickenpox spreds by contacts with blisters. The other deseases don't spread by air. They could be spread by other ways like blood, food etc.

ANSWERED AT 21/01/2020 - 07:43 AM


QUESTION POSTED AT 21/01/2020 - 07:43 AM

A blue whale makes a call underwater at the same time as an elephant calls on land. How long will it take each of these sounds to travel 3 km

Of we take sound V as 343m/s the elephant will take 8.75sec.
and in the water the sound V is 1493m/s the whale will take 2.01sec.

ANSWERED AT 21/01/2020 - 07:29 AM


QUESTION POSTED AT 21/01/2020 - 07:29 AM

The theory of evolution states that all life is related and that organisms have become more complex over time. which phrase describes a theory?

A theory is a set of ideas or facts that explains an existing predicament or situation. In this case, the problem presents a statement on the theory of evolution. The phrase that describes a theory is that "all life is related and that organisms have become more complex over time."

ANSWERED AT 21/01/2020 - 06:14 AM


QUESTION POSTED AT 21/01/2020 - 06:14 AM

A tow truck exerts a net horizontal force of 1050 n on a 760-kg car. what is the acceleration of the car during this time?

Answer: The acceleration of the car during this time is 1.38 m/s^2.

Explanation:

Force exerted on the two truck = 1050 N

Mass of the car = 760 kg

According to Newton's second law of Motion;

Force=Mass \times Acceleration

1050 N=760 kg\times Acceleration

Acceleration=\frac{1050 N}{760 kg}=1.38 m/s^2

The acceleration of the car during this time is 1.38 m/s^2.

ANSWERED AT 21/01/2020 - 06:10 AM


QUESTION POSTED AT 21/01/2020 - 06:10 AM

Geologic time is divided into units based upon types of ____. a. sedimentary rocks c. organisms b. climatic changes d. igneous rocks

The correct answer is C. Geologic time is divided into units based upon the types of organism present. There are four main eras when time is divided this way - the Hadean (which comes before the presence of life), the Archean (the era before eukaryotes), the Proterozoic (the time before more complicated, multicellular life forms), and the Phanerozoic which is the subsequent era since.

ANSWERED AT 21/01/2020 - 04:45 AM


QUESTION POSTED AT 21/01/2020 - 04:45 AM

The theory of evolution states that all life is related and that organisms have become more complex over time. Which phrase describes a theory

The best explanation of observations and data.
The theory of evolution states that all life is related and that organism have become more complex over time is the theory that uses observation and data for it to be proven.

ANSWERED AT 21/01/2020 - 04:44 AM


QUESTION POSTED AT 21/01/2020 - 04:44 AM

Which describes a value for density? a value for volume, such as m3, divided by a value for mass, such as kg a value for mass, such as kg, divided by a value for volume, such as m3 a value for distance, such as m, divided by a value for time, such as s a value for time, such as s, divided by a value for distance, such as m

The correct answer would be the second option. Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. It is a property that can be used to describe a substance.

ANSWERED AT 21/01/2020 - 04:42 AM


QUESTION POSTED AT 21/01/2020 - 04:42 AM

When blood passes through the lungs, carbon dioxide and water are formed from carbonic acid dissolved in the blood. the carbon dioxide formed passes into the lungs and is exhaled. h2co3 h2o co2 what kind of reaction has occurred?

The reaction that occurred is called a decomposition reaction when carbon dioxide and water are formed from carbonic acid. It is a type of reaction where it involves a single compound breaking down into two or more products. These reactions often requires an energy source thus is an endothermic reaction.

ANSWERED AT 21/01/2020 - 03:49 AM


QUESTION POSTED AT 21/01/2020 - 03:49 AM

Skeletal muscles are joined to bones by tough connective tissue called

Tendons
hope this helps!!!

ANSWERED AT 21/01/2020 - 03:39 AM


QUESTION POSTED AT 21/01/2020 - 03:39 AM

Air moves through the respiratory system in a continuous cycle. Which of the following correctly describes the movement of air through the parts of the respiratory system

Nose ->pharynx -> trachea -> bronchi -> bronchioles -> alveoli ->gas exchange with the cells and then back out of your system. 

ANSWERED AT 21/01/2020 - 02:42 AM


QUESTION POSTED AT 21/01/2020 - 02:42 AM

A kind of sedimentary rock formed from plant material over a long period of time is __________. a. limestone b. cementation c. coal d. compaction

The correct answer is:

c. coal

Explanation:

Coal is a fossil fuel that forms when dead plant material is remodeled into peat, which in turn is transformed into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. Most of the coal we use now was formed about 300 million years ago, when much of the earth was inundated by humid swamps. As plants and trees died, their remains sank to the bottom of the swampy areas, creating layers and layers of plant material and sequentially forming a soggy, thick material called PEAT.

ANSWERED AT 21/01/2020 - 01:42 AM


QUESTION POSTED AT 21/01/2020 - 01:42 AM

The actual cells that the muscles are made of are called _____. muscle fibers myofibrils lactic acid fibers muscle sections

Answer:

muscle fibers

Explanation:

Muscle tissue is responsible for the movement of organisms and their organs. It is formed by cells called myocytes or muscle fibers.

The contractile or extrafusal muscle fibers are the characteristic cells of the muscle. They are multinucleated cells, large and very elongated, measuring from a few millimeters to 30cm in length.

Muscle fibers have individual characteristics that give them a certain specialization, and although they combine modalities of speed, power and endurance, in general one of them predominates over the others.

In their cytoplasm they contain a precise organization of contractile proteins called myofibrils. These myofibrils are responsible for changes in muscle fiber length when they contract or relax.

There are three types of muscle fibers that differ in color, metabolism and functional properties:

- Type I fibers (red fibers): they are reddish-looking fibers due to their richness in myoglobin (important for the transport of oxygen within the muscle cell) and are characterized by being slow contraction, developing little strength and being very resistant to fatigue .

- Type IIb fibers (white fibers): they are fibers of large diameter and whitish appearance due to their lower amount of myoglobin; Their contraction is rapid and they develop a lot of strength, but they tire quickly.

- Type IIa fibers (mixed fibers): they are fibers of appearance and intermediate properties between the other two. The contraction is rapid, but they have some resistance to fatigue.

ANSWERED AT 21/01/2020 - 01:30 AM


QUESTION POSTED AT 21/01/2020 - 01:30 AM

A boxer has been jumping rope for an hour his leg muscles are burning and he feels weak what substance is most likely cause of the burning he feels in his muscles

Answer:

Waste products from anaerobic respiration

Explanation:

apex

ANSWERED AT 21/01/2020 - 12:59 AM


QUESTION POSTED AT 21/01/2020 - 12:59 AM

Why do our muscles behind our ears twitch when we hear a sudden loud noise

To make the waves bounce better so they are received better and/or because they hurt your ears

ANSWERED AT 20/01/2020 - 11:29 PM


QUESTION POSTED AT 20/01/2020 - 11:29 PM

Why do our muscles behind our ears twitch when we hear a sudden loud noise

The ear drum rings that's how it protects our ear

ANSWERED AT 20/01/2020 - 11:28 PM


QUESTION POSTED AT 20/01/2020 - 11:28 PM

How does increased pressure result in the formation of a mineral? The atoms in the mineral get rearranged. The mineral gets broken down over time. The mineral erupts from a volcano. The mineral dissolves in hot water.

Answer:

The correct answer is option A, that is, the atoms in the mineral get rearranged.

Explanation:

With time, and under immense pressure, the atoms of a substance can become reorganized, producing a novel substance. For example, the carbon present underground in the form of coal encounters with intense pressure, that further gets rearranged or reorganized to convert into a diamond, that is, the atoms of coal get rearrange themselves with time to produce a diamond.

ANSWERED AT 20/01/2020 - 10:50 PM


QUESTION POSTED AT 20/01/2020 - 10:50 PM