Fill In Blanks

Question 1

______ muscles can be found in the heart.

Answer 1

Cardiac

Question 2

The motor neuron, it’s axon, and the muscle fibres it stimulates together referred to as the __________

Answer 2

Motor unit

Question 3

The chemical ______ is released at the neuromuscular junction

Answer 3

Acetylcholine

Question 4

__________ muscle contraction occurs when muscle fibres shorten

Answer 4

Concentric

Question 5

There is no change in length of muscle fibre during a __________ exercise

Answer 5

Isometric

Question 6

According to the sliding filament theory, muscle contraction is achieved by an overlapping of __________ and __________ filaments.

Answer 6

Myosin and actin

Question 7

Troponin and tropomyosin are fond on the __________ filament.

Answer 7

Actin

Question 8

Biceps femoris is the largest of the __________ group of muscles

Answer 8

Hamstring

Question 9

The “trigger mechanism” for the sliding filament process is the release of __________ ions

Answer 9

Calcium

Question 10

DOMS stands for __________

Answer 10

Delayed onset muscle

Question 11

When a motor unit is stimulated to contract, it will do so at its fullest potential and it is called the __________ principle.

Answer 11

All-or-none principle.

Question 12

Rectus abdominis origin

Answer 12

Pubic crest and symphysis pubis

Question 13

Rectus abdominis insertion

Answer 13

Xiphoid process and inferior ribs

Question 14

Rectus abdominis action

Answer 14

Flex the trunk, aids in expiration, defection, and childbirth.

Question 15

Pectoralis major origin

Answer 15

Sternum clavicle, ribs 1-6, abdominal portion of external obliques.

Question 16

Pectoralis major insertion

Answer 16

Lateral tip of intertubercular groove

Question 17

Pectoralis major action

Answer 17

Internal rotation, adduction and flexion of arm

Question 18

Gluteus Maximus origin

Answer 18

Crest of ilium, sacrum and coccyx

Question 19

Gluteus Maximus insertion

Answer 19

Posterior aspect of the greater trochanter of femur.

Question 20

Gluteus Maximus action

Answer 20

Hip extension and external rotation

Question 21

Tibialis anterior origin

Answer 21

Anterior shaft of tibia

Question 22

Tibialis anterior insertion

Answer 22

Medial cuneiform, base of first metatarsal

Question 23

Tibialis anterior action

Answer 23

Dorsiflexes ankle, inverts foot

Question 24

Rectus femoris origin

Answer 24

Anterior inferior iliac spine

Question 25

Rectus femoris insertion

Answer 25

Patellar tendon, tibial tuberosity of tibia.

Question 26

Rectus femoris action

Answer 26

Knee extension and hip rotation

Question 27

In a lower arm extension what is the agonist muscle and antagonist muscle

Answer 27

Agonist: triceps brachii Antagonist: biceps brachii

Question 28

In a shoulder adduction what is the agonist muscle and antagonist muscle

Answer 28

Agonist: Latissimus Dorsi Antagonist: Deltoid

Question 29

In a knee flexion what are the agonist and antagonist muscles

Answer 29

Agonist: biceps femoris Antagonist: rectus femoris

Question 30

In a plantar flexion what are the agonist and antagonist muscles

Answer 30

Agonist: gastrocnemius Antagonist: Tibialis anterior