Lecture 3.2 Flashcards Preview

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Flashcards in Lecture 3.2 Deck (28):
1

There are __ carpal bones

 

___ rows, bridged by flexor retinaculum

Scaphoid is most _______

There are 8carpal bones

2 rows, bridged by flexor retinaculum

scaphoid is most vulnearble

2

Scapohid and lunate together make contact with the ____

radius

3

Pisiform is a sesamoid bone

what is a asesamoid bone

 

develped within a tendon

work as ball bearings

4

hamate sits distal to the ________

pisiform

5

True or False:

 

The piso-hamate ligament conects the pisoform and hamate

true

6

Fracture of the hamate bone will affect the ___ nerve

ulnar nerve

7

metacarpals are _____bones

long bones

8

The first metacarpal is the ____

thumb

9

 Label

10

The ________ ____ is the most superficial palmar muscle, located in the lateral side

The palmaris brevis is the most superficial palmar muscle, located in the lateral side

11

Contracture of the plamar fascia - is the thickening and shrinking of _____  _____, typically affecting ring and ling fingers. No know aetiology but thought to be inherited

Contracture of the plamar fascia - is the thickening and shrinking of palmar fascia, typically affecting ring and ling fingers. No know aetiology but thought to be inherited

12

 

The flexor retinaculum attaches to what?

Medial: Hook of hamate
 & pisiform

 

Lateral: Trapezium & scaphoid

13

Carpal tunnel:

 

Roof:

Floor:

Promial end identified by:

Contents:

Roof: flexor retinaculum

Floor:Carpal bones

Promial end identified by: distal wrist crease

Contents:

  • Flexor tendons,
  • synovial sheaths
  • median nerve

14

What tructures pass superficial to the carpal tunnel?

 

Polmarus longus

Ulnar artery / ulnar

superficial branch of radial artery

palmar cutaneous branch of median nerve

15

consider the FDS and FDP tendons in the synovial sheaths.

Which numbers go where (imagine the corss sectional diagram)

16

The Flexor carpi radialis lies in the ___ of the carpal tunnel

roof

17

True or False

 

There is no extensor retinaculum

False - there is

18

How many muscles are in the extensor campartment of the forearm?

 

How many go through the extensor retinaculum?

11

 

9 go through

(the supinator & bracial radialis dont go past the wrist)

19

What are the borders of the anatomical snuff box?

 

what does it contain

Anteriorly: tendons of Abductor pollicis longus (APL) and Extensor pollicis brevis (EPB)

Posteriorly: Extensor pollicis longus

Roof: skin, subcutaneous tissue, cephalic vein, superficial branch of radial nerve

Floor: scafoid, trapezium

contents - RADIAL ARTERY

20

What are the thenar (thumb) muscles?

abductor pollicis brevis

flexor pollicis brevis

21

What are the hypothenar muscles?

abductor digiti minimi

flexor digiti minimi

 

Both arise from dges of flexor retinaculum

and insert into base of proximal phalanx

22

Lumbricals arise from ...

they pass to _____side of digit

Flexor digitorum profundus

they pass to lateral side of digit

23

Lumbricals flexor the _______ joint

 

Lumbricals flexor the carpal/metacarpal joint

 

24

The intrinsic muscle of the thenar side are:

opponens pollicis

adductor pollciis

25

he opponens digit minimi (hypothenar muscle) allows one to do _______

opposition

26

On the palmar side there are __ interossei muslces

On the Dorsal side there are __ interossei muscles

On the palmar side there are 3 interossei muslces (pull the finger together)

On the Dorsal side there are 4 interossei muscles

27

The median nerve comes through the carpal tunnel then sends the recurrent branch to the _ muscles on the thenar side of the palm

5

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