Lab 7-9: Articulations and Musculature

These flashcards cover key concepts regarding articulations and muscles, helping to reinforce understanding for the exam.

What is the function of joints in the body?

Joints hold bones together and provide flexibility for movement.

What are the three classifications of joints?

Fibrous, Cartilaginous, Synovial.

What is an example of a fibrous joint?

Squamous suture between cranial bones.

What are cartilaginous joints connected by?

Cartilage with no joint cavity.

What type of joint is covered in cartilage and movable?

Synovial joints.

What fluid lubricates synovial joints?

Synovial fluid.

What type of synovial joint allows for rotational movement?

Pivot joint.

What is the primary movement of flexion in a joint?

Reduces the angle between bones.

Define abduction in terms of joint movement.

Movement away from the midline.

What is the function of the menisci in the knee joint?

Distributes weight and provides stability.

What is the role of the ACL and PCL in the knee?

Control front to back motion.

Describe the glenohumeral joint.

The most freely movable joint in the body.

Where does the temporomandibular joint (TMJ) articulate?

Between the condylar process of the mandible and the temporal bone.

What is an agonist muscle?

The prime mover that contrasts while the antagonist relaxes.

What is the definition of synergist muscles?

Muscles that aid the agonist.

What type of muscle fibers are multinucleated and striated?

Skeletal muscle fibers.

What are the three types of muscle tissue?

Skeletal, Cardiac, Smooth.

What does the term 'rectus' refer to in muscle naming?

Straight or parallel to the midline.

Give an example of a fusiform muscle.

Biceps brachii.

What action does the Zygomaticus muscle perform?

Smiling.

What muscle is responsible for flexing the forearm?

Biceps brachii.

What is the location of the gluteus maximus?

In the buttocks.