Puas cov leeg luv thaum lub sij hawm contraction?

Cov txheej txheem:

Puas cov leeg luv thaum lub sij hawm contraction?
Puas cov leeg luv thaum lub sij hawm contraction?
Anonim

Ib qho kev sib cog lus ua rau cov leeg ua kom luv, yog li tsim lub zog. Eccentric contractions ua rau cov nqaij ntshiv elongate nyob rau hauv teb rau ib tug ntau dua opposing quab yuam. Isometric contractions ua rau lub zog tsis hloov qhov ntev ntawm cov leeg.

Yuav ua li cas contraction tshwm sim thaum cov leeg luv?

A concentric contraction is a type of muscle ua kom muaj zog ntawm koj muscle as it shortens . Raws li koj leeg luv , nws tsim kom muaj zog txaus txav ib yam khoom. Nov yog hom nrov tshaj plaws ntawm muscle contraction. Hauv kev cob qhia qhov hnyav, bicep curl yog ib qho yooj yim-rau-paub pom kev txav chaw.

Yuav ua li cas rau cov leeg ntev thaum lub sij hawm contraction?

A cov leeg ntev tsis tuaj yeem ua rau lub sijhawm nws cog lus, thiab lub zog siv sab nraud yog ntau dua li lub zog contractile los ntawm cov leeg.

Cov leeg nqaij luv luv thaum lub sij hawm isotonic contraction?

Hom Kev Tiv Thaiv Cov leeg: Ib qhoisotonic concentric contraction ua rau cov leeg nqaij luv, ib qho isotonic eccentric contraction ua rau cov leeg ntev. Thaum lub sij hawm isometric contraction cov leeg yog nyob rau hauv nruj tab sis tsis shortens los lengthens.

Yuav ua li cas luv thaum lub sij hawm cov leeg nqaij contraction?

Kev piav qhia: Thaum lub sij hawm cov leeg nqaij contraction, myosin taub hau rub cov actin filamentsmus rau ib leeg ua rau ib tug luv luv sarcomere. Thaum I band thiab H cheeb tsam yuav ploj lossis luv, qhov ntev A band yuav nyob twj ywm tsis hloov.

Pom zoo:

Nthuav cov khoom
Thaum twg tus menyuam ya mus?
Nyeem ntxiv

Thaum twg tus menyuam ya mus?

Fledglings feem ntau pib sim ya thaum cov noog muaj kwv yees li ob lub lis piam, thiab txawm tias lawv tau pib tawm hauv lub zes, lawv tsis nyob ntawm lawv tus kheej, raws li cov Massachusetts Audubon Society. Cov niam txiv feem ntau nyob ze, saib xyuas lawv cov xeeb ntxwv thiab tseem muab zaub mov.

Ntau npaum li cas 99 chinning osrs?
Nyeem ntxiv

Ntau npaum li cas 99 chinning osrs?

Feem ntau, rau 99 ntau yam, koj xav tias yuav siv sijhawm 40+ hnub kev cob qhia siv hlau lossis hlau riam phom. Tab sis kuj ceeb tias, txoj kev no raug nqi txog 30M-55Mnrog rune xub lossis mithril ntuav riam. Ntxiv rau, koj tuaj yeem ua tiav 60-99 ntau yam hauv tsawg li 15 hnub.

Dab tsi yog qhov txawv ntawm lub tshuab hluav taws xob thiab lub tshuab hluav taws xob?
Nyeem ntxiv

Dab tsi yog qhov txawv ntawm lub tshuab hluav taws xob thiab lub tshuab hluav taws xob?

Gramophone: Txhua lub suab kaw suab, lossis cov cuab yeej ua si yav dhau los-cov suab kaw, tshwj xeeb tshaj yog tias nws siv lub tiaj tiaj tiaj. Phonograph: Txhua lub suab kaw suab, lossis cov cuab yeej siv rau kev ua si cov suab uas tau kaw dhau los, tshwj xeeb tshaj yog tias nws siv lub tog raj kheej tig.