Urinary system

Urinary system

Realizado por:

Reyna Estela López López 11E-16 Jaquelin Mashela Fernanda Marroquin Suazo 11E-17 Madeleine Guadalupe Martínez Figueroa 11E-18 Josselyn Azucena Morales Diéguez 11E-19 Mersy Yullisa Orellana Dieguez 11E-20

Urinary Sistem

....................................................

1-2

Kidneys

....................................................

3-4

Urinary Bladder

....................................................

5-6

Inferior Vena Cava ...............................................

7-8

Aorta Artery

....................................................

9-10

Urethra

....................................................

11-12

Ureters

....................................................

13-14

The

urinary

set

of

system

is

organs

the that

participate in the formation

directed

to

the

urinary

meatus

and the outside of the body

and urine evacuation. It is made up

single duct, the urethra, urine is

of

two

kidneys,

dense

organs. urine

single duct, the urethra, urine is directed

to

the

urinary

meatus

and the

producers,

from

outside of the body.

which arise the renal pelvis as a broad

It

excretory duct, which when narrowed

is

called

the

ureter, through both ureters

urine

urinary

bladder

accumulates, through

is

responsible

where

the it

finally

the

elimination of metabolic waste, excess salts and toxins through the urine.

reaches

for

The kidneys are the primary organs of the urinary system.

The

kidneys

are

the

organs

that filter the blood, remove waste, and excrete waste in the

urine.

organs

They

that

functions

of

are

the

perform

the

the

urinary

system.

The

other

components

are

accessory

structures for removing urine

Each kidney contains more

from the body.

than

The

right

slightly

lower

because down.

kidney

the

is

than liver

The

usually the

left

pushes

it

kidneys,

protected by the lower ribs.

a

units,

million

called

functional

nephrons,

the

parenchyma

and

medulla).

has

two

corpuscle tubule.

A

parts: and

in

(cortex nephron a a

renal renal

Urinary bladder It

is

a

hollow

membranous

musculo-

organ

that

is

part of the urinary tract and receives

urine

from

the

ureters, stores it and expels it through the urethra to the outside of the body during urination.

The urine that comes from the kidney, passing through the ureter, is stored in the urinary bladder before being excreted. Its capacity is approximately 750 ml.

It is a

virtual space, that is, as it expands, that prevents a trauma to the pelvis from causing a rupture of the urinary bladder. At its distal end there is a sphincter which can be controlled from 18 to 24 months of life.

People who cannot control the bladder sphincter have the disadvantage that when they are asleep or fainted, they can spontaneously let out urine.

Inferior vena cava The

inferior

carries legs,

blood feet,

vena from

cava the

abdominal

organs, and pelvis.

It is formed by the union of the left and right primitive iliac

veins.

anastomoses

It with

also the

azygous vein system, which

carries deoxygenated blood from the lower body to the right atrium. The right atrium receives

deoxygenated

runs down the right side of

blood

from

the spinal column, and the

through

the

venous plexuses along the

cava and the inferior vena

spinal cord.

cava.

the superior

body vena

it is a system that collects blood

from

brachiocephalic trunks.

the

Aorta artery

Aorta artery It

is

the

most

important

artery in the body.

It

carries

oxygenated

blood

from the heart to the blood vessels to reach the rest of the body.

It is the largest artery in the human body.

It leaves the heart after the aortic

valve

and

passes

through all the organs, finally dividing

into

the

iliac

arteries. About five liters of blood pass through the aorta per minute.

Normally the artery measures about 2.3 cm in diameter in men and 1.9 cm in women.

The

aorta

can

be

more

than an inch wide in some places

and

has

three

layers: Intimate inner layer Middle middle layer Adventitious outer layer When with

there the

is

aorta,

a

problem

the

heart

and body can be at risk.

Urethra The urethra is the tube through which urine passes from the urinary bladder.

The main sphincter muscle surrounds the middle urethra and holds the urine until it is ready to expel. In women the urethra is about 3 a 5cm in length and opens to the outside of the body just above the vagina. In the shoulders, the urethra is 20cm long, passing through the prostate gland and then through the outer penis of the body.

Ureters The ureters are Two narrow tubes that carry urine from the kidneys to the bladder. The muscles in the walls of the ureters continually contract and relax to force urine downward. The stretching of the ureter

due to the entry of urine stimulates its muscles to contract, thus pushing fluid into the bladder. Control of contractions is mainly carried out in response to local stimuli.