posture

Question 1

posture is the

Answer 1

alignment of the various body segments

Question 2

postural body segments

Answer 2

the joints involved in weight bearing (spine, pelvis, hip, knee, ankle, foot etc)

Question 3

different postures are the result of

Answer 3

variations in the alignment of body segments

Question 4

What is unique to man

Answer 4

the ability too maintain an erect, upright posture

Question 5

upright posture enables the use of

Answer 5

UE to interact with the environment

Question 6

disadvantages of upright posture:

Answer 6

• incr heart work
• incr stress on vert column, pelvis & LE
• decr stability (high COG over small BOS)

Question 7

location of COG

Answer 7

s2

Question 8

in the optimal standing posture, line of gravity falls close to but not through most:

Answer 8

joint axis

Question 9

the position of the line of gravity influences

Answer 9

torque around a joint

ex: if the line of gravity is in front of the body, the body will want to move forward

Question 10

Is muscle activity needed to have an erect posture?

Answer 10

some muscle activity is necessary to maintain erect posture

Question 11

Majority of support required for posture comes from:

Answer 11

bones, joints, ligaments

Question 12

the line of gravity anterior to a joint will result in

Answer 12

anterior motion of the proximal segment

Question 13

line of gravity posterior to a joint will result in

Answer 13

posterior motion of the proximal segment

Question 14

primary antigravity muscles:

Answer 14

• hip & knee extensors

- trunk & neck extensors

Question 15

secondary antigravity muscles:

Answer 15

• trunk & neck flexors
• lateral flexors
• hip abductors/adductors
• ankle pronator/supinators

Question 16

postural sway

Answer 16

constant movement of the center of gravity over the BOS

Question 17

postural sway is managed by:

Answer 17

ankle plantarflexion & dorsiflexion

Question 18

what increases postural sway??

Answer 18

high COG with a small BOS (ex: standing on tip toes or on one foot)

Question 19

what is important for maintaining alignment and mitigating stress placed on body???

Answer 19

good posture

Question 20

Posture ______ the muscle energy needed to keep the body _______ at rest & during activities

Answer 20

decreases;

upright;

Question 21

the position of the pelvis influences the _________, especially at the ________

Answer 21

vertebral column

lumbar region

Question 22

Neutral pelvis is when:

Answer 22

the ASIS & PSIS are level (coronal plane)

ASIS aligned with pubic symphysis vertically

Question 23

pelvis anterior tilt increases:

Answer 23

the lumbar curve (lordosis)

Question 24

pelvis posterior tilt increases:

Answer 24

the lumbar curve (kyphosis)

Question 25

gait causes a ______ pelvic tilt

Answer 25

lateral

Question 26

force couple actions that help stabilize the pelvis:

Answer 26

hip abductors on the contralateral side
&
trunk lateral flexors on the ipsilateral side

Question 27

What is good sitting posture?

Why is it important?

Answer 27

• flat feet, lumbar support, neck & trunk upright

- to maintain the vertebral curves

Question 28

supine lying posture

Answer 28

least amount of intervertebral disk pressure

BEST

Question 29

prone lying posture

Answer 29

increased stress on cervical spine

Question 30

side lying posture

Answer 30

increased torsion (sleep w pillow between legs)

Question 31

dynamic posture is important b/c????

Answer 31

keeping the body in good postural alignment during functional tasks

Question 32

principles of body mechanics during dynamic posture involves:

Answer 32

maintaining vertebral curves
&
avoiding/minimizing stress to the trunk & neck

Question 33

scoliosis

Answer 33

lateral curvature of the spine

Question 34

kyphosis

Answer 34

used to describe abnormal excessive curvature (forward) of the thoracic spine

hunched over

Question 35

lordosis

Answer 35

abnormal curvature forward of the lumbar spine

compressive force- posteriorly
tensile force - anteriorly