muscular function
What are the primary roles of skeletal muscle in the body?
A.pump blood through the body
B. Facilitate voluntary movement and maintain pressure
C.transport nutrients within the body
D.produce hormones for metabolic regulation
D. Produce hormones for metabolic regulation
When the quadricep muscles contract to cause knee extension, which bone is acting as the lever rod?
A.tibia
B.humerus
C. Radius
D. Femur
A. Tibia
Which of the following bones is part of the axial skeleton?
A.femur
B. Clavicle
C. Humerus
D.sternum
D. Sternum
What is a key difference between ligaments and tendons?
A.ligaments connect muscle to bone; tendons connect bone to bone
B. Ligaments are elastic, while tendons are not
C. Ligaments store minerals, tendons store energy
D.ligaments connect bone to bone, tendons connect muscle to bone
D. Ligaments connect bone to bone, tendons connect muscle to bone
Which of the following is the axis that would skewer you from head to toes?
A. Longitudinal axis
B. Sagittal axis
C. Frontal axis
D. Y-axis
A. Longitudinal
Which type of muscle contraction involves the muscle length remaining constant while generating force?
A. Isometric
B.Isotonic concentric
C.isotonic eccentric
D. Isokinetic
A. Isometric
In a third class lever, the insertion of a muscle will most likely act as…
A. The fulcrum
B. The effort force
C. The load force
D. The lever arm (rod)
B. The effort force
The chest, in comparison to the back, would best be described as….. ?
A.Anterior
B. Posterior
C. Inferior
D. Superior
A. Anterior
Which of these are NOT a function of connective tissues?
A. Protect organs
B. Immune function
C. Energy production
D. Connect bone to bone
C. Energy production
How many thoracic vertebrae are there?
A. 5
B. 7
C. 12
D. 24
C. 12
What is the order of motor unit recruitment during exercise as intensity increases?
A.Type llx to type lla to type l
B.type lla to type l to type llx
C.Type l to type lla to type llx
D.type l to type llx to type lla
C. Type l to type lla to type llx
What is torque?
A. Linear force acting on an object
B. The resistance of an object to move
C. the energy stored in a lever system
D. Rotational force about a fixed axis
D. Rotational force about a fixed axis
How many vertebrae are in the neck?
A.5
B.7
C.12
D.24
B.7
A hinge joint allows……
A. A wide range of motion
B. Circumduction
C. Movement in only one direction
D. Superior
C. Movement in only one direction
When the hamstring muscles contract to cause knee Flexion, which bone is acting as the lever rod?
A.humerus
B. Femur
C. Radius
D. Tibia
D.tibia
What is the function of the sarcoplasmic reticulum?
A.store and release calcium ions
B.provide energy in the form of ATP
C. Transmit action potentials along the muscle fiber
D.Break down acetylcholine at the neuromuscular junction.
A.Store and release calcium ions
Which of the following levers would have a mechanical advantage of 2?
A. An effort arm of 4 m and load arm of 2 m
B. A third-class lever where load is 1m from fulcrum
C. An effort force of 20N used to lift a load of 10N
D. A first class lever where the load arm is twice the distance of the effort arm.
A. An effort of 4 m and load arm of 2 m
In anatomical position, the finger that is most medial is the….
A.middle finger
B. Thumb
C.pinky
D.they are all equally medial in anatomical position
C.pinky
The wrist is an example of which type of joint?
A. Gliding
B. Condyloid
C. Hinge
D. Pivot
B. Condyloid
Blood vessels transport nutrients through a hole called a/an ______?
A. Diaphysis
B. Foramen
C. Epiphysis
D. Metaphysis
B. Foramen
What does transient hypertrophy refer to?
A.an increase in muscle cell size due to long-term training
B. a temporary increase in muscle size due to fluid accumulation after exercise
C. The creation of new muscle cells through hyperplasia
D. A reduction in muscle mass due to disuse
B. a temporary increase in muscle size due to fluid accumulation after exercise
Which of the following is true about a lever that has a large mechanical advantage?
A.it generates extra force out of no where
B. The trade off of for a large mechanical advantage is that the effort arm has to move farther than the load arm
C. The large mechanical advantage will make effort more difficult to lift the load
D. The direction of the effort force is always different than the load force.
B. The trade off of for a large mechanical advantage is that the effort arm has to move farther than the load arm
Around which axis would your leg be rotating as you raised your knee in front of you?
A. Longitudinal axis
B. Sagittal axis
C.frontal axis
D. Axis of Archer
C. Frontal axis
When the fascia continues beyond the muscle it becomes…..
A. tendon
B. Fascicle
C. Muscles cells
D. Cartilage
A. Tendon
Dorsiflexion moves the toes in which of the following planes?
A. Frontal plane
B. Sagittal plane
C. Transverse plane
D. Biplane
B. Sagittal plane