* Heart
’ Ho||Ow conesh aped, mus culcr punp.
’ Q.5 billion times in an avg. tfetime
beat abo ut
an estHmated
’ (eft side of the hart punps bl00d throyh
120,0 00 Kn sf bloo esel.
Heart puops moe thon abot 14,0O0L S blo in a dey
Dimensiony f Hegt
’ Abott 12 em (5 in) ong. qom (3.5 in) wide at its broadest pojt
Gm (?.s in) thick. Avg. mass Q509 in females 30 io
males. Cadlt)
the diaphragm, near inidioe
f-th0racis
caiy
Relaiog.
OSupe nOry (yper) - Aor ta, Supeior vtnq cara, Aartey &p. vein.
TOPeorly (4owQr) - Diaphragm
Anenorly (Pront) - Ribs & ioterosta0 ms cles
Posteriorly (bak) Esophaqus , tra chea, L&o R bronhus, descending
qorta, i0Petor vena cQva thorde vetebrue
4 latercu ty (side) Lun qs
Swe of Heart
’ It is a Gooe o) t e outer 5urfa ce f tho
the division bet the artia entrcles
O Atioventiular Sul y (Seperates artia from ventnc les)
(P) Antenor in terentilor swJ Cuy
(3) Pos terior iote hientrflar sulcu. lies bet LV o Riv on postejo
Compley spaces ithin the_periegrdial sac
Pencqdial c inuses that' are extesiony of peicardial avity
’ The lioes betn vis cera &o pamatal pe cadim
Rorm t o peicar dia) sinuwy es
, O Tnnsyerse peicardiel sios ;ies antenor to supenar
cQa & postcior to
ascending aorta pelmonay tun k
Obli9ue peicadial cioy Aies postenor to te belrt
the peri ca rdial SQc
Auscle: An teior syotace of each winked pouh
ike structu e called an asncle. TE sliqhly
the capauty f an ceiun so that it can hold greter
vo.0f bloo.
Pericardium
+Coverings se Heart Epicardiwn
Myocardiwg
Endocardim
O Pencardim
’ Do ble- wc led s ac
’ Consists majn parts
ay fi brow pei cardi
composed f tou gh, in elasH , dense irreqlar connetie
" Prevents oestrechinA sf Heart
" Prote cion
Anchors the heot io the medi asHom
b Ser0us peri cardium
Thinner membrane that forms a double layer arond
the he0rt
" Outer parnetal layey fused to the ibrous pencardium
Inner visce ral layer - Also callad epicardiu helps the layen
of the heart wl t0 d adhpres tiqhtly to he surface
of the hegrt tstekJatch
DOHS