Anatomy Flashcards

0
Q

What does the kidney metabolise?

A

Vitamin D

Catabolism of insulin, PTH, calcitonin

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1
Q

Function of the kidneys?

A
Control volume
Control osmolarity
Help to control pH
Excretion of waste products
Synthesise some hormones 
Metabolism of some things
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2
Q

How much water in a person?

A

40L

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3
Q

Where is water stored and what quantities?

A

ICF - 25L

ECF - 15L

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4
Q

What happens if something has a high osmotic potential?

A

Water moves towards it

Water moves from low to high osmolarity

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5
Q

What is osmolality and osmolarity?

A

Osmolality - solute per kilo of solvent

Osmolarity - no. of osmoles of solute per litre

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6
Q

How many nephrons in each kidney?

A

1.5 million

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7
Q

What levels are the kidneys at? Which is higher?

A

T11/T12

Left is higher than the right

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8
Q

Where does the bladder sit in an adult and child

A

Adult - behind the pubic bone

Child - above the pubic bone

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9
Q

Course of a ureter?

A

Arise from renal pelvis on medial aspect of each kidney
Descend on front of psoas major passing laterally to medially
Cross pelvic brim near bifurcation of iliac arteries
Pass under uterine artery/ductus deferens
Down the pelvic sidewall
Insert on posterior surface of the bladder

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10
Q

List some bony landmarks for course of the ureters

A

Arise at L2
Descend in front of tips of lumbar transverse processes
Cross into pelvic brim roughly in front of sacroiliac joint
Enter bladder at level of ischial spines

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12
Q

Three sections of the ureters where kidneys are likely to cause an obstruction?

A

Junction of renal pelvis and ureter
Pelvic brim
Where ureters pass into wall of bladder

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13
Q

What surrounds the kidneys?

A

Perinephric fat
Renal fascia which surrounds the adrenal glands also
Paranephric fat

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14
Q

What part of the nephron is contained in the renal cortex?

A

Bowman’s capsule and renal tubules except for part of the loop of Henle

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15
Q

What is contained in the renal medulla?

A

The loop of Henle and collecting duct

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16
Q

What happens at the renal papilla?

A

Where the urine empties from the renal pyramid into the minor calyxes

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17
Q

What percentage of cardiac output do the kidneys receive?

A

20%

18
Q

At which vertebral level do the renal arteries arise from the abdominal aorta?

A

L1/L2

19
Q

List the blood supply to the kidneys

A

Abdominal aorta - renal artery - segmental artery - interlobar - arcuate - interlobular - afferent - glomerulus - efferent - peritubular capillaries (cortical nephron)/vasa recta (juxtamedullary nephron) - interlobular vein - arcuate vein - interlobar vein - renal vein

20
Q

Where does the right renal artery pass in relation to the IVC?

A

Passes behind the IVC

21
Q

Where do the renal arteries lie in relation to the renal veins?

A

The arteries are posterior to the veins

22
Q

What are the four parts of the male urethra called?

A

Preprostatic
Prostatic
Membranous/pelvic
Spongy/phallic

23
Q

At which vertebral levels would you find the poles of the left and right kidneys?

A

Left kidney - T11

Right kidney - T12

24
Q

How long is the male urethra?

A

20cm

25
Q

How long is the female urethra

A

4cm

26
Q

Describe the bladder

A

Hollow, smooth muscle organ placed anteriorly in the pelvic cavity
Derived from the hindgut

27
Q

Function of the bladder?

A

Collection
Temporary storage
Expulsion
Of urine

28
Q

What are the folds in the internal lining of the bladder called?

A

Rugae

29
Q

How much urine can the bladder hold?

A

Up to 600ml

30
Q

What connects the apex of the bladder to the umbilicus?

A

Median umbilical ligament

Remnant of the urachus

31
Q

Where is the trigone?

A

The triangular area located within the fundus of the bladder.
Marks orifices by ureters and urethra

32
Q

Which sphincter are women missing in the bladder?

A

Internal

Only have an external

33
Q

Where is the detrusor muscle?

A

In the bladder wall

34
Q

Why are the fibres of the detrusor muscle arranged in different directions?

A

Retains structural integrity when the bladder is stretched

35
Q

What does the detrusor muscle do?

A

Contracts during micturition

36
Q

Under what part of the autonomic nervous system is the bladder under the control of?

A

Parasympathetic and sympathetic

37
Q

What muscle is the internal urethral sphincter composed of?

Which branch of the nervous system controls it?

A

Circular smooth muscle fibres

Autonomic control

38
Q

What muscle is the external urethral sphincter composed of?

Which branch of the nervous system controls it?

A

Skeletal

Voluntary/somatic

39
Q

Function of the internal urethral sphincter?

A

Prevents seminal regurgitation during ejaculation

40
Q

Arterial supply of the bladder?

A

Superior vesicle branch of the internal iliac (primarily)
Obturator and inferior gluteal arteries also contribute branches

Males: supplemented by inferior vesicle artery
Females: supplemented by vaginal arteries

41
Q

Venous drainage of the bladder?

A

Vesicle venous plexus draining into the internal iliac vein aka hypogastric vein