Roundworms: tsanangudzo pfupi pamusoro mhando

Roundworms, kana sezvo vari kunzi nematodes, muri zvinenge pamwe zvikuru muviri mhango. Yavanogara zvikuru siyana nzvimbo panyika - makungwa, mvura yakachena uye ivhu. Vamwe vamiririri ndivo tupukanana - Ivo zviripo tichiregeredza chirimwa uye mhuka Utachiona. The yakakurumbira vakawanda dzevanhu tupukanana uye roundworm Trichinella.

Type Roundworms: STRUCTURAL zvinhu. The zita akanyatsorevesa anodaro nemamiriro vamiririri ichi mhando - mune muchinjikwa-chikamu vane kumativi chimiro. muviri ravo fusiform uye kujekesa mativi, unogona kuona musoro zvakajeka nechemberi mugumo. symmetry muviri mhando - bilateral.

Kana kukura zvipenyu izvi, ivo zvinosiyana zvikuru - kubva roga (80 microns), kumusoro kusvika hofori (kupfuura 8 metres kubva shato huru tupukanana).

muviri wavo une ganda-tsandanyama homwe riri vakaparadzana zvomukati chezvinhu mhango, kana psevdotselem. The ganda akafuka gobvu rukoko pamusoro cuticle, iyo vanowanika epithelium kwokunze integument.

Roundworms: nemamiriro ose zvomudumbu hurongwa. Zvomudumbu turakiti kuburikidza boka iri zvipenyu. Oral aperture anoda panguva mberi kuguma muviri uye takakombwa miromo uye tsandanyama tishu. Inotungamirira kuna tsandanyama pharynx, iro rinoshandiswa kuti kushingaira kubvisa zvokudya. Zvokudya ipapo anopinda pakati, uye ipapo ari hindgut. metabolic zvigadzirwa vari vabudiswa kuburikidza horo mune vakadzi kana varume cloaca.

Zvinofadza kuti vamwe zvinenge parasitic kwaiita zvomudumbu chubhu uye kuva bhegi diki pasina maburi.

Roundworms: afemeruke uye excretion. Excretory maitiro roundworms vakanaka. Izvi zvinosanganisira huru chete-sero remuromo mumasero. The metabolic zvigadzirwa uchingounganidza ari mhango fluid pashure izvo zviviri longitudinal migero lateral vanozoona mune simbi uye asunungurwa kunze. Mutsipa ane yoga simbi excretory yokutanga iyo inotanga muna abdominal mugove muviri. Vamwe metabolites, zvakadai amoniya, vari vabudiswa zvakananga nomuviri rusvingo.

Kana kufema, ari zvikuru zvakagadzirirwa kuti nhengo vasina zvipenyu. Okisijeni wefodya nokuda intestinal munyama. Pakadaro, kana uine kurarama ezvinhu okisijeni nenzara roundworms anogona kupfuura kuti anaerobic mhando afemeruke.

Roundworms vavo tsinga. Tsinga mune zvinenge izvi zviri chinyakare, kunyanya mune parasitic siyana. Huru associative muzinda akapa peripharyngeal tsinga ganglia, umo mbiri tsinga hunde dzacho abve.

Kana pfungwa, ivo akapa papillae, setae, uye amphids drugiemi idzodzo. All ichi - miviri zvemaziso, zvemakemikari, uye chiedza wanda. In ichi mhando tupukanana pfungwa dziri zvishoma dzakabudirira kupfuura akasununguka chimiro.

Roundworms: kubereka. Vamiriri ichi mhando dzemhuka dziri dioecious zvinenge. Panguva iyoyo ndipo uye kunyatsooneka zvepabonde dimorphism - mukono veshure mugumo ndeyokubvisa kusvika ventral chikamu muviri.

Female pabonde nhengo vanomirirwa ovaries, dumbu uye oviducts. Munhurume ane manhu, vas efferens uye ejaculatory mutsinga dzinofamba nemukaka. The Munhurume dzisingaoneki nezvevanakomana vakapinda nyinyo munhukadzi copulatory nhego kuburikidza. Sezvineiwo, urume vane flagella, dzinotambura mufambo uye amoeboid chimiro.

The Roundworms vakasiyana ndege? Kutaura zvazviri, kusiyana nezvemarudzi maviri mhuka kunyatsooneka. Chokutanga, zvakakodzera kutaura pamusoro pezvakaita muviri - muchinjikwa-sectional Flatworms vane flattened muviri. Chimwe musiyano - Ndiro huru muviri mhango, inova kure vamiririri flatworms. Mukuwedzera, nematode ratova ikoko-kuburikidza zvomudumbu hurongwa. Zvinofanira kucherechedzwa kuti flat makonye - hermaphrodites.