Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
Origin |
The point at which a muscle's tendon attaches to the more stationary bone.
|
|
Insertion
|
The point at which a muscle's tendon attaches to the more moveable bone.
|
|
Belly
|
The largest part of the muscle, which actually contains the muscle cells.
|
|
Mastication
|
The process of chewing
|
|
Extrinsic Hand Muscles
|
Muscles of the forearm that create movement in the hands
|
|
Intrinsic Hand Muscles
|
Muscles in the hand that produce movement in the hand
|
|
Several muscles work together to laterally rotate the thigh. What do we call an entire group of muscles that work together?
|
Synergists
|
|
One of the jobs of the flexor digitorum superficialis is to flex the wrist. When working in this fashion, does this muscle form a first-class lever, a second-class lever, or a third-class lever?
|
In this situation, we have a second-class lever. Look at the flexor digitorum superficialis. The tendons attach near the ends of the fingers. When it flexes the hand, the weight it lifts is mostly the palm of the hand. The wrist is the fulcrum, and the resistance is between the effort and the fulcrum. |
|
|
a. frontalis |
|
Of the muscles labeled above, which are involved in mastication?
|
Temporalis, masseter, lateral pterygoid, medial pterygoid |
|
Name the "kissing muscle."
|
Orbicularis oris
|
|
|
a. pectoralis minor |
|
Which structure above is not a muscle?
|
The linea alba is not a muscle, it is a band of connective tissue that binds all of the abdominal muscles |
|
Which of the muscles above act on the arm? |
The deltoid and pectoralis major muscle move the arm. |
|
Which of the muscles in the figure move the vertebral column?
|
The rectus abdominis, external oblique, and internal oblique muscles move the vertebral column. |
|
|
a. trapezius |
|
|
a. biceps brachii |
|
Which of the structures in the figure above is not a muscle? What is its job?
|
The extensor retinaculum is not a muscle--its job is to secure the extensor tendons so that they do not "bow out" when the muscles contract. |
|
What is the difference between extrinsic and intrinsic hand muscles?
|
Extrinsic hand muscles are muscles in the forearm that create movement in the hands, while intrinsic hand muscles are muscles in the hand that produce movement in the hand. |
|
|
a. gluteus medius |
|
List all the muscles that are involved in flexing the thigh. List their antagonists.
|
The thigh flexors are the tensor fasciae latae, rectus femoris, sartorius, iliacus, psoas major, and adductor longus. The antagonists are the extensors: gluteus maximus, semitendinosus, semimembranosus, biceps femoris, and adductor magnus. |
|
List all of the muscles that are involved in abducting the thigh. List their antagonists.
|
The abductors of the thigh are the gluteus maximus, gluteus medius, gluteus minimus, and tenor fasiae latae. Their antagonists are the adductors--the adductor longus, the adductor magnus, and the gracilis. |
|
There are two muscles that flex the forearm. List them. List their antagonist.
|
The biceps brachii and the brachioradialis flex the forearm. Their antagonist is the triceps brachii. |
|
There are two supinators of the forearm at the elbow. List them. List their two antagonists.
|
The two supinators of the forearm are the supinator and the biceps brachii. Their antagonists, pronators, are the pronator teres and the pronator quadratus. |
|
|
a. gastrocnemius |
|
Which of the structures in the figure above are not muscles?
|
The extensor retinacula, calcaneal tendon, and the patellar ligament. |