Exam 2 Part 4

Question 1

Flexion

Answer 1

decreases joint angle; move away from anatomical position (bend knee, bend elbow)

Question 2

extension

Answer 2

increases joint angle; return to anatomical position

Question 3

dorisflexion

Answer 3

flex foot upward

Question 4

plantar flexion

Answer 4

flex foot downwards

Question 5

plantar

Answer 5

sole of foot

Question 6

abduction

Answer 6

move away from main body axis (laterally)

Question 7

adduction

Answer 7

move toward main body axis

Question 8

supination

Answer 8

rotation of forearm so palm faces anteriorly in anatomical position

Question 9

supinare

Answer 9

lie face up

Question 10

pronation

Answer 10

rotation of forearm so palm faces posteriorly

Question 11

pronare

Answer 11

lie face down

Question 12

myology

Answer 12

study of muscles

Question 13

myo

Answer 13

latin muscle

Question 14

sacro

Answer 14

greek muscle

Question 15

myocyte

Answer 15

muscle cell

Question 16

sacrolemma

Answer 16

muscle plasma membrane

Question 17

lemma

Answer 17

plasma membrane

Question 18

sacroplasm

Answer 18

muscle cell plasm

Question 19

SR

Answer 19

sacroplasmic reticulum

Question 20

muscle cell

Answer 20

myocyte. also called muscle fiber

Question 21

muscle fibers

Answer 21

groups form functional unit

Question 22

muscle function

Answer 22

movement, heat production, posture/support

Question 23

muscle types

Answer 23

skeletal, smooth, cardiac

Question 24

skeletal muscles

Answer 24

voluntary, striated
multinucleated, cylindrical cell, may be very long
within cells are structures called myofibrils

Question 25

myofibrils

Answer 25

within cells. comprised of protein filaments called myofilaments

Question 26

myofilaments

Answer 26

protein filaments in myofibrils. Proteins are myosin and actin

Question 27

myosin

Answer 27

THICK myofilament protein

Question 28

actin

Answer 28

THIN myofilament protein

Question 29

sacromere

Answer 29

myofilaments arragenment organizies myofibrils into these

Question 30

when myofilaments move...

Answer 30

movement of entire muscle

Question 31

striations

Answer 31

cross bands where myofilaments overlap

Question 32

fascicles

Answer 32

bundles of individual muscle cells

Question 33

Connective tissue of muscle

Answer 33

endomysium perimysium epimysium

Question 34

endomysium

Answer 34

innermost; surrounds individual muscle fibers, holds them together loose areolar CT

Question 35

perimysium

Answer 35

surrounds bundles of fibers fascicles also contains nerves and vessels dense irregular CT

Question 36

peri

Answer 36

around

Question 37

epimysium

Answer 37

surrounds entire muscle, connects to tendon | dense irregular CT

Question 38

tendon

Answer 38

dense regular CT that connects to periosteum

Question 39

deep fascia

Answer 39

dense irregular CT, surrounds and connects muscles, nerves, vessles, fills space

Question 40

superficial fascia

Answer 40

loose fibrous CT and adipose CT, connects muscle to skin | also called hypodermis

Question 41

origin

Answer 41

head. proximal; moves less than insertion | can be more than 1

Question 42

insertion

Answer 42

distal; moves more than origin | can be more than 1

Question 43

belly

Answer 43

gaster. central, fleshy part of muscle

Question 44

aponeurosis

Answer 44

sheet-like tendon