muscle joint review Physio

If a prime mover flexes a joint:

• the synergist will extend the joint

• the synergist and antagonist will extend the joint

• the antagonist will extend the joint

• the antagonist will assist in flexing the joint

Moving part of the body away from the midline of the body is:

• abduction

• adduction

• extension

• rotation

Straightening a bent elbow is:

• rotation

• flexion

• extension

• abduction

The muscle attachment to the more movable bone is called the:

• bursa

• insertion

• origin

• tendon

What part of the body does the pectoralis major move?

• trunk of the body

• legs

• head

• arms

The point of contact between the nerve and the muscle fibers it stimulates is called a:

• acetylcholine

• motor neuron

• neuromuscular junction

• receptor

Tags

NGSS.MS-LS1-3

What muscle group is responsible for extending the knee (lower leg)?

• quadriceps

• hamstring

• gastrocnemius

• biceps brachii

The basic contractile unit of a skeletal muscle is the:

• sarcomere
• potassium

• fibers

• cell membrane

Answer explanation

Sarcomeres change length for a muscle to contract

When a muscle contraction occurs:

• the space within the sarcomere increases

• the space within the sarcomere decreases

• the myosin gets wider

• the actin gets shorter

Tags

NGSS.MS-LS1-7

Which of the following ways of producing ATP is the most efficient for muscle, producing the 32 ATP?

• Aerobic pathway

• Anaerobic pathway

• Creatine-phosphate

• Rephosphorylation of ADP

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3