L13 Muscle Form and Concentric Action

1

Which muscle has two origins on the scapula, 3 bodies, and one insertion to the humerus?

1

The middle belly of the deltoid contributes most to adduction of the arm.

1

Choose the incorrect statement.
EXCLUDE the knee joint for this question!

1

It is the triceps brachii which allows supination at the radioulnar joint.

1

Choose the correct statement about the triceps brachii.

1

Which muscle allows rotation of the hip and originates from the vertebrae and hip?

1

The gluteus maximus originates from the ❌, and inserts on the ❌. It is the main contributor for ❌ of the leg/over the hip joint.

sacrum and the pelvis

sacrum and the femur

iliotibial band

tibia

femur

pelvis

extension

flexion

1

The quadriceps femoris originates from the ❌, attaches to the ❌ via the ❌, and allows extension of the knee.

pelvis and femur

femur

sacrum and pelvis

tibia

fibula

patellar tendon

iliotibial tendon

1

The hamstrings originate from the pelvis and femur, and insert in one place, on the tibia.

1

Where does the tibialis anterior insert and which motion does it elicit?

1

The triceps surae orginates from the femur, tibia, and fibula.

List the muscles described in this lecture and describe their general attachments to the skeleton. • Understand the relationship between muscle location, muscle contraction and joint movement. • Determine the ‘concentric action’ of these muscles.

L13 Muscle Form and Concentric Action

Which muscle has two origins on the scapula, 3 bodies, and one insertion to the humerus?

The middle belly of the deltoid contributes most to adduction of the arm.

Choose the incorrect statement. EXCLUDE the knee joint for this question!

It is the triceps brachii which allows supination at the radioulnar joint.

Choose the correct statement about the triceps brachii.

Which muscle allows rotation of the hip and originates from the vertebrae and hip?

The gluteus maximus originates from the ❌, and inserts on the ❌. It is the main contributor for ❌ of the leg/over the hip joint.

The quadriceps femoris originates from the ❌, attaches to the ❌ via the ❌, and allows extension of the knee.

The hamstrings originate from the pelvis and femur, and insert in one place, on the tibia.

Where does the tibialis anterior insert and which motion does it elicit?

The triceps surae orginates from the femur, tibia, and fibula.

Choose the incorrect statement.
EXCLUDE the knee joint for this question!