Musculoskeletal System review quiz

The number of thoracic vertebrae is:

12

What is the action of the Palmar Interossei?

ADDuction of 2nd, 4th, & 5th digits

The ion necessary for cross-bridging is:

Calcium

Which of the following is true regarding a concentric muscle contraction?

It occurs when a muscle exerts a force & shortens

When a muscle cannot be further excited it is said to be in the____

absolute refractory period

Which of the following are responsible for external rotation of the upper arm?

both infraspinatus & teres minor

Which two nerves are terminal branches of the sciatic nerve?

common fibular & tibial

ridge of bone

crest

The osteon, or haversian, system

delivers nutrients to and removes waste products from bone cells

Which part of a long bone ossifies from the primary ossification center?

diaphysis

The trochlea and capitulum can be described as:

distal portions of the humerus

Which action is the Masseter responsible for?

elevating mandible

eminence superior or adjacent to a condyle

epicondyle

The longest and heaviest bone in the body is the:

femur

The action of the brachialis muscle is to _______ the forearm.

flex

passage through a bone

foramen

elongated depression of furrow

groove

large, round articular end

head

The ______ is the only bone in the body that articulates with no other bones.

hyoid

Which nerve innervates the Gluteus Maximus?

inferior gluteal nerve

cardiac muscle

involuntary straited

smooth muscle

involuntary unstraited

Which of the following is TRUE regarding cardiac muscle?

it contains intercalated discs

Which muscle assists in the grinding of food?

medial pterygoid

Which nerve passes between the heads of the Pronator Teres?

median

Which nerve passes through the carpal tunnel?

median

Another name for a skeletal muscle cell is a(n):

muscle fiber

Which nerve innervates the Piriformis?

nerve to piriformis

Which muscle elevates the eyebrows and indicates a look of surprise?

occipitofrontalis

Which muscle closes the eye?

orbicularis oculi

In bone formation, the cells that produce the organic matrix are the:

osteoblasts

Which of the following is not a type of cell found in bones?

osteology

Which of the following is an example of a sesamoid bone?

patella

Which muscle is responsible for unlocking the knee?

popliteus

When an athlete injures a muscle of the hamstring group, the injury is on the:

posterior thigh

Which bone marrow produces red blood cells?

red bone marrow

The contractile unit of a muscle that spans between two Z discs is a:

sacromere

The plasma membrane of a muscle fiber is called the

sarcolemma

thorn-like process

spine

Which of the following is not a muscle of the rotator cuff?

teres major

All of the following are characteristics of smooth muscle except:

thin and thick filaments are aligned in sarcomeres like skeletal muscles

Which muscle is innervated by the Spinal Accessory Nerve?

trapezius

skeletal muscle

voluntary straited