13

HUMAN BIOLOGY and MEDICINE II

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Mosaic from Hadrian's villa (Museo Capitolino, Rome)

When I reached the sanctuary, the god Asclepius bade me further to cover my head in rainy weather, wash myself without the aid of a servant, take exercise in the gymnasium, eat bread, cheese, celery and cabbage lettuce, drink lemon juice and milk, go for walks and not to omit to make sacrifice.

AELIUS ARISTIDES (second-century CE Greek orator)

ADVANCED MEDICAL TRAINING

In the preceding chapter, we surveyed all the major organs of the human body as well as the variety of ailments that might afflict them; but for those who wish to continue their medical education, what follows is an overview of the major systems, or structures to which those organs belong.1 Once again, Greek and Latin roots provide the necessary language for labeling their various components and functions. Although many of these words have come into English unchanged, some of the words included in this chapter are learned borrowings. Indeed, ancient Greek and Roman physicians sometimes had an imperfect understanding not only of human anatomy, but of the functions of various organs and systemic processes.

THE CIRCULATORY SYSTEM

The circulatory, or cardiovascular, system consists of the heart and blood vessels.

Greek or Latin Word

Original Meaning

Current English Usage

Combining Form

vena, venae

vein

vein

veno-

phleps, phlebos (φλέψ)

vein

vein

phlebo-

arteria (άρτηρία)

windpipe

artery

arterio-

vas, vasis

vessel

vessel

vaso-

corona, coronae

crown

coronary

corono-

lympha, lymphae

fluid; water

lymph

lympho-

The arterial system got its name from the fact that the ancient Greeks believed that the arteries carried air.

aer (ἀήρ) = air

THE RESPIRATORY SYSTEM

The respiratory system includes all those organs necessary for the taking in of oxygen and the giving off of carbon dioxide.

Greek or Latin Word

Original Meaning

Current English Usage

Combining Form

spiro-spirare-spiratum

breathe

breathe

spiro-

pneo (πνέω)

breathe

breathe

pneo-

pneumon (πνεύμων)

lung

lung

pneumo-

jugulum, juguli

throat

throat

jugulo-

pharynx (φάρυγξ)

throat

passageway for air and food

pharyngo-

trachea (τραχει̑α)

rough

windpipe

tracheo-

bronchia (βρόγχια)

tubes

bronchia

bronchi-

pleura (πλευ̑ρα)

side; rib

pleura

pleuro-

diaphragma (διάφραγμα)

partition; midriff

diaphragm

phreno-

or fren (φρήν)

midriff; mind

diaphragm, mind

 

thorax (θώραξ)

breastplate

chest

thoraco-

It's Not All in Your Head

The Greeks believed that the center of emotions and the home of the mind were in the diaphragm [phren (φρήν = diaphragm]. From this notion we derive frenzy, frenetic, phrenology, and schizophrenia. What are the current meanings of these words?

THE DIGESTIVE SYSTEM

The digestive system includes all the organs necessary for taking in, breaking down, and absorbing food.

Greek or Latin Word

Original Meaning

Current English Usage

digero-digerere-digestum

separate; divide

digest

pepto (πέπτω)

soften; cook

digest

intestinum, intestini

internal; intestine

intestine

The intestine, or alimentary canal, is divided into two parts, the small and large intestines. The small intestine consists of:

Greek or Latin Word

Original Meaning

Current English Usage

pylorus (πυλωρός)

gatekeeper

pylorus2

duodeni

twelve

duodenum3

jejunum, jejuni

empty; barren

jejunum4

ileum, ilei

flank

ileum

The large intestine consists of:

Greek or Latin Word

Original Meaning

Current English Usage

caecum, caeci

blind; concealed

cecum

colon (κόλον)

colon

colon

rectum, recti

straight

rectum

There are several other organs whose secretions aid in the digestion of food:

Greek or Latin Word

Original Meaning

Current English Usage

Combining Form

cholae (χολαί)

gall bladder

gall bladder

cholecysto-

pancreas (πάγκρεας)

sweetbread5

pancreas

pancreato-

There are, of course, many words in Greek and Latin that have to do with eating, some of which have become part of modern medical terminology:

Greek or Latin Word

English Meaning

Combining Form

phagein (φαγει̑ν)

eat

-phage, phago-

trophe (τροφή)

nourishment

-trophy

nutrio-nutrire-nutritum

nourish; support, take care of

nutri-

orexis (ὄρεξις)

appetite

-orexia

geusis (γευ̑σις)

taste (noun)

-geusia

THE REPRODUCTIVE SYSTEM

The human reproductive system consists of those organs and glands that are involved in the propagation of offspring.

Greek or Latin Word

English Meaning

gone (γονή)

produce, offspring.What is the Latin cognate of this word?

propago-propagare-propagatum

extend; enlarge

ovum, ovi

egg

sperma (σπέρμα)

seed

hystera (ὑστέρα)

uterus

fetus, fetūs

offspring

embryon (ἔμβρυον)

young, fetus

It's Not Funny …

Some ancient Greek doctors believed that many mental disturbances in women were due to the dysfunction of the uterus. Although the word has lost its association with female behavior, hysteria is still used as a medical term to define a psychological condition that produces physical symptoms. It more commonly describes states of uncontrolled emotion of sadness, fear, or joy.

THE ENDOCRINE SYSTEM

The endocrine system consists of the ductless glands that produce hormones that are discharged into the blood or lymph and that then circulate throughout the body. They include the pituitary, thyroid, parathyroid, and adrenal glands; the insulin-secreting glands of the pancreas; and the gonads. These hormones control the body's ability to metabolize a variety of substances and affect every facet of its functioning. Many of these glands take their names either from their shape or location, such as the adrenal glands, which are located adjacent to the kidneys, or the thyroid, whose shape resembles an ancient Greek oblong-shaped shield that covered the body from neck to ankles. Where are the parathyroid glands located?

Greek or Latin Word

English Meaning

crino (κρίνω)

separate; secrete

endon (ἔνδον)

within

glans, glandis

acorn

hormao (ὁρμάω)

excite, stimulate

pituita, pituitae

phlegm

thyreos (θυρεός)

large shield

insula, insulae

island

creas (κρέας)

flesh, meat

metabole (μεταβολή)

change

Ahem …

Ancient Greek physicians believed that the function of the pituitary gland was to produce phlegm, one of the four humors.

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Etruscan gorgon (Villa Giulia, Rome)

MORE USEFUL BEGINNINGS AND ENDINGS

The following Greek-based prefixes and suffixes are used in modern science and medicine to describe other systems, functions, and components of the body:

Greek Word

Original Meaning

Current English Usage

Combining Form

aden (ἀδήν)

gland

denoting a gland

adeno-

blastos (βλαστός)

sprout, seed

denoting a seed or embryo

blasto-, -blast

cytos (κύτος)

hollow; vessel

denoting a cell

cyto-, -cyte

cystis (κύστις)

bladder

denoting a sac

cysto-, -cyst

histos (ἱστός)

web

denoting tissue

histo-

myelos (μυελός)

marrow

denoting bone marrow or spinal cord

myelo-

penia (πενία)

poverty

denoting deficiency

-penia

plasso (πλάσσω)

mold, shape

denoting a formation

-plasia

thrix, trichos (θρίξ)

hair

denoting hair

tricho-

The Long and the Short of It

All of the following prefixes are derived, with no change in meaning, from Greek adjectives, and are used in biology and medicine to describe a variety of physical characteristics.

Greek Adjective

Meaning

English Combining Form

brachy (βραχύ)

short

brachy-

brady (βραδύ)

slow

brady-

lepton (λεπτόν)

slender

lepto-

malacon (μαλακόν)

soft

malaco-

opisthen (ὄπισθεν)

at the back

opistho-

pachy (παχύ)

thick

pachy-

platy (πλατύ)

broad

platy-

scleron (σκληρόν)

hard

sclero-

tachy (ταχύ)

fast

tachy-

xeron (ξηρόν)

dry

xero-

Use Your Head …

The Latin word for hair is capillus, capilli. From what Latin noun is this word derived?

Ring Around the Collar

As you probably know from watching all those movies about Robin Hood, the Three Musketeers, and Queen Elizabeth, the traditional way of conferring knighthood is to tap the recipient on the shoulder with the flat side of a sword, in a gesture called accolade. Because knighthood was a reward for services performed, accolade now means any award or public praise.

collum, colli = neck

Scribble, Scribble!

By the way, those illegible letters that doctors so often scrawl on prescription forms are abbreviations of Latin phrases:

Abbreviation

Latin Phrase

English Meaning

ad lib.

ad libitum

as desired

b.i.d.

bis in diē

twice a day

b.i.d.

bis in nocte

twice a night

h.s.

hora somni

at bedtime

p.o.

per os

by mouth

q.i.d.

quater in diē

four times a day

q.v.

quantum vis

as much as you wish

s.o.s.

si opus est

if necessary

stat.

statim

immediately

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NAME _______________________________________________________________________

A. What are the following diseases, medical procedures, or biological processes?

1. venotomy

____________________

2. arteriogram

____________________

3. vasculitis

____________________

4. phlebectomy

____________________

5. tracheostomy

____________________

6. pleurodynia

____________________

7. dysgeusia

____________________

8. tachycardia

____________________

9. cholocystitis

____________________

10. brachypnea

____________________

11. anorexia

____________________

12. trichotillomania

____________________

13. osteomalacia

____________________

14. adenoma

____________________

15. myelopathy

____________________

16. histogenesis

____________________

17. colonoscopy

____________________

18. pharyngoplegia

____________________

19. pancreatalgia

____________________

20. pneumonia

____________________

B. Fill in the blank with the literal meaning of the underlined word or part of word. Make sure that the sentence is grammatically correct. If you are unsure of the meaning, check your unabridged dictionary.

21. He was so aggressive that when he “went for the jugular,” everyone around covered their __________.

22. A platypus is a mammal distinguished by its __________ __________.

23. A pachyderm is a mammal distinguished by its __________ __________.

24. A dyspeptic individual is grouchy, perhaps because he has __________ __________.

25. A sclerotic individual is one whose ideas have become __________.

26. The queen received a __________ at her coronation.

27. His inspiring speech allowed me to __________ __________ his knowledge and wisdom.

28. What is the meaning of atrophy in medical terminology? __________

29. What is its meaning in the following sentence? “Her desire for fame and fortune atrophied as her acting career blossomed.” __________

30. A pneometer is ____________________ __________.

31. Histology is the __________ __________.

32. I was insulted when my friend said I had cerebromalacia.Why? ____________________

33. A phagocyte is a __________that has the ability to __________ various substances.

34. A leptorrhine individual has a __________ __________.

35. A brachycephalic individual has a __________ __________.

36. The trademark Xerox was given to a process of __________ copying.

37. An omophagous animal__________ raw food.

38. The pylorus acts as a __________between the stomach and duodenum.

39. The lymphatic system is composed mainly of __________.

40. Myeloma is a __________that originates in the __________.

41. Peptic enzymes aid in the __________ of food.

42. I went to a trichologist when I wanted to change the color of my __________.

43. What is the etymological connection between the jejunum and jejune behavior? __________________________________________________

44. Nutrients provide __________ for the body.

45. A nocturnal creature is active during the __________.

46. If the doctor in the emergency room yells “stat!” she needs help __________.

47. Someone suffering from leukopenia has a__________ white blood cells.

48. His bald ovate-shaped head reminded me of an __________.

49. When we describe an idea as embryonic, what do we mean? ____________________

50. When we describe someone's attitude as insular, what do we mean? ____________________

C. The Latin verb digero is a compound of dis- (apart) + gero-gerere-gestum (carry, bear). What are the literal meanings and current usages of the following words?

 

Literal Meaning

Current Usage

51. egest

____________________

____________________

52. congestion

____________________

____________________

53. gestation

____________________

____________________

54. gesture

____________________

____________________

55. suggestive

____________________

____________________

56. gesticulate

____________________

____________________

57. digest (noun)

____________________

____________________

58. ingest

____________________

____________________

D. Take a deep breath …

What are the literal meanings and current usages of the following words?

 

Literal Meaning

Current Usage

59. respiration

____________________

____________________

60. expire

____________________

____________________

61. conspiracy

____________________

____________________

62. transpire

____________________

____________________

63. inspiration

____________________

____________________

64. aspiration

____________________

____________________

Footnotes

1.Medical and anatomical terms already given in chapter 12 are not repeated here.

2. The pylorus is the opening between the stomach and duodenum.

3. The duodenum gets its name from its size, about twelve (duodeni) finger-breadths in length.

4. The jejunum is the middle portion of the small intestine. Ancient medical theory stated that after death, it was empty.

5. Literally, “all-flesh.”

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