Muscles

Question 1

muscle fiber plasma membrane

Answer 1

sarcolemma

Question 2

innervates a certain number of muscle fibers

Answer 2

motor neuron

Question 3

tiny thread like structure found in muscle cells to help contract and produce movement

Answer 3

myofibril

Question 4

functional unit of the contraction system and the unit of myofibril

Answer 4

sarcomere

Question 5

ending or outside of the sarcomere

Answer 5

z-line/disc

Question 6

increases the angle of a joint

Answer 6

extensors

Question 7

decreases the angle of a joint

Answer 7

flexors

Question 8

what muscle sites are used on small animals for IM injections?

Answer 8

lumbosacral epaxial
quadriceps
triceps

Question 9

what muscle sites are used on large animals for IM injections?

Answer 9

“the triangle”
pectorals
gluteals
SMST (horses)

Question 10

bands of connective tissue (collagen) between muscles and bones

Answer 10

tendons

Question 11

what structures are found in the stifle

Answer 11

1. bones:
   femur (thigh bone)
   tibia (shin bone)
   patella (kneecap)
   fabellae: small sesamoid bones most commonly in dogs.
2. cartilage:
   articular (covers the end of bones)
   menci: two c-shaped cartilage pads between the femur and tibia
3. ligaments:
   cranial cruciate-ACL
   caudal cruciate-PCL
   medial collateral, lateral collateral, & patellar
4. joint capsules
5. muscles and tendons

Question 12

dense fibrous connective tissue that lies over individual muscles to support, separate, and connect muscles to other structures

Answer 12

fascia

Question 13

functional unit of voluntary striated muscles

Answer 13

motor unit

Question 14

messages sent along nerves via electrical events

Answer 14

action potential

Question 15

group of muscles located dorsal to the spine

Answer 15

epaxials:
transversospinalis group
longissimus group
iliocostalis group

Question 16

appearance of sarcomeres

Answer 16

striated

Question 17

(two) proteins responsible for muscle contraction & relaxation

Answer 17

myosin & actin

Question 18

nervous system control of muscles

Answer 18

involuntary

Question 19

striated voluntary type of muscle attached to bones

Answer 19

skeletal muscle

Question 20

non striated-involuntary visceral type of muscle

Answer 20

smooth muscle
(respiration, circulation, digestion)

Question 21

striated involuntary type of muscle

Answer 21

cardiac muscle
(heart)

Question 22

connective tissue between bone and muscle

Answer 22

tendons

Question 23

muscle functions?

Answer 23

movement
support
majority of the body
thermogenesis

Question 24

found around the base of the tail in the quadriceps

Answer 24

gluteals

Question 25

basic muscle cell

Answer 25

fiber

Question 26

formed by the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris

Answer 26

quadriceps

Question 27

found on the caudal aspect of the humerus

Answer 27

triceps

Question 28

outer connective tissue layer of muscle groups/bellies

Answer 28

epimysium

Question 29

absence of sarcomeres

Answer 29

non-striated

Question 30

moves the limb away from the body

Answer 30

abductor

Question 31

moves the limb toward the body

Answer 31

adductor

Question 32

turning around on an axis

Answer 32

rotation

Question 33

circular movement

Answer 33

circumduction

Question 34

straightening or increasing angle of a limb

Answer 34

extensor

Question 35

bending or reducing the angle of a limb

Answer 35

flexor

Question 36

distal moveable end of bone attachment

Answer 36

insertion

Question 37

proximal stationary end of bone attachment

Answer 37

origin

Question 38

small animal IM injection sites?

Answer 38

epaxial hamstrings biceps femoris semitendinosus semimembranosus

Question 39

large animal IM injection sites

Answer 39

pectoral gluteals hamstrings semitendinosus semimembranosus cervical musculature

Question 40

covers each fascicle of a muscle

Answer 40

perimysium