Exam 1 pt2 Flashcards
Stability and mobility are inversely proportional.
True
Which type of joint allows for the least range of motion?
Hinge
Flexion, extension occur in which plane of motion?
Sagittal
What are the main purposes of bone?
Provide protection, insertion, origin points for muscles, and structure
A ball and socket joint has how many degrees of freedom?
three
Neutralizers are muscles that produce opposite movements about the same joint
False
During the concentric portion of a squat the hips and knees move about the anteroposterior axis.
False
What primarily contributes to the dynamic stability of a joint among the following options?
Muscle surrounding joints
Which of the following situations best exemplifies Wolff’s Law?
Increase in bone density due to weight bearing exercise
What is the primary joint movement at the elbow during eccentric phase of a biceps curl?
extention
Eccentric muscle action produces the most amount of force.
True
The mediolateral axis dissects which plane of motion?
sagittal
What two joints have uniquely names joint movements?
wrist and ankle
The elbow is less stable than the shoulder.
False
Biarticular muscles insert across different joint than where the muscle originates.
True
In anatomical position, if someone raises their hand perpendicular to their body what movement is occurring?
shoulder abduction
In anatomical position, the right pinky is ____ to the right thumb
Medial
The anatomical position is characterized by which of the following?
Arms at the sides with palms facing forward
Pennate muscles typically have a larger function cross-sectional area than parallel muscles.
True
Which of the following is NOT a type of parallel muscle arrangement?
Paraform
Muscles that have high elasticity will never be able to stretch very far.
false
Muscles with high extensibility are easy to stretch
True
Which muscles prevent unwanted joint action caused by agonists but help optimize their force produce?
True synergist
Muscles can pull and push to produce motion of the skeleton
Falase
An isokinetic joint movement is said to have a constant movement speed.
True
When a muscle is contracted concentrically it
shortens
A muscle that is triangular in shape or fan-shaped with a combination of flat and fusiform fiber arrangements is what type of muscle?
Radiate
A pennate muscle produces greater joint range of motion compared to a same size parallel fiber muscle.
False
The _______ of a muscle defines how well a muscle can return to its original length after stretching.
Elasticity
The muscle contraction of your quadriceps that is required to control knee flexion during walking or running is.
eccentric
When an external force such as another person or object is responsible for a joint movement, the muscle involvement is to be ______.
passive
Which of the following help the action of agonistic muscles and prevent undesired movements?
helping synergist muscles
Which of the following methods is used to understand muscle actions by applying an electrical stimulus to the muscle?
Electrical muscle stimulation
