Kune matatu makuru makusheni aripo mune yakajairika anal canal. Aya anowanikwa zvakajairika kuruboshwe kuruboshwe, kurudyi kumberi, uye kurudyi kumashure nzvimbo. Iwo anoumbwa kwete nemitsinga kana mitsinga yeropa inonzi sinusoids, yekubatanidza tishu, uye muswe wakatsetseka. Sinusoids haina mhasuru tishu mumadziro avo, semitsinga inoita. Iyi seti yemidziyo yeropa inozivikanwa seye hemorrhoidal plexus. Hemorrhoid makusheni akakosha ekudzivirira. Vanopa 15<unk>20% yekuvharwa kweanal kumanikidza panguva yekuzorora uye vanochengetedza yemukati uye yekunze sphincter mhasuru panguva yekuchinja kwakashata. Kana munhu achinge apinda mune stool, iyo intra-abdominal kumanikidza inokura, uye anal sphincter makusheni anowanikwa mune yakasarudzika kumashure nzvimbo.
pavanenge vachiona zvinhu zvisina kumira zvakanaka