Module 7 - Ch 2-5 Flashcards
Which of the following is true of type I, or slow-twitch, muscle fibers?
Select one:
a. They contain more capillaries, mitochondria, and myoglobin than type II muscle fibers.
b. They have a low oxidative capacity and fatigue quickly.
c. They are faster than type II muscle fibers to produce maximal tension.
d. They are larger in size than type II muscle fibers and are referred to as white fibers.
a. They contain more capillaries, mitochondria, and myoglobin than type II muscle fibers.
What are sensitive to changes in tension and the rate of that change, protecting a muscle from possible injury? Select one: a. Golgi tendon organs b. Osteoclasts c. Efferent neurons d. Muscle spindles
a. Golgi tendon organs
Deoxygenated blood is pumped from the right ventricle to the lungs through which of the following vessels? Select one: a. Pulmonary veins b. Aortic arch c. Pulmonary arteries d. Aortic valve
c. Pulmonary arteries
Which of the following is a characteristic of muscle spindles?
Select one:
a. They transmit nerve impulses from one neuron to another.
b. They are sensitive to change in length of muscle and the rate of that change.
c. They are slow twitch, “red” muscle fibers with a high degree of mitochondria.
d. They provide the ability to sense the relative position of adjacent parts of the body.
b. They are sensitive to change in length of muscle and the rate of that change.
Which of the following is an example of a sagittal plane movement? Select one: a. Triceps pushdown b. Horizontal adduction of limbs c. Internal rotation of limbs d. Side lunges
a. Triceps pushdown
Which mechanoreceptor helps prevent muscles from stretching too far or too fast? Select one: a. Intercalated disc b. Golgi tendon organ c. Muscle spindle d. Ruffini endings
c. Muscle spindle
Which muscle action occurs when a muscle is exerting force greater than the resistive force, resulting in shortening of the muscle? Select one: a. Isometric b. Eccentric c. Concentric d. Isokinetic
c. Concentric
In which of the following scenarios would energy be mostly derived from anaerobic metabolism?
Select one:
a. When an athlete is in a steady state or at rest
b. When an athlete begins an activity
c. When an athlete reduces the duration of an activity
d. When an athlete experiences temporary fatigue
b. When an athlete begins an activity
Which term refers to an anatomical position on the opposite side of the body? Select one: a. Ipsilateral b. Contralateral c. Superior d. Distal
b. Contralateral
Which term refers to a system of glands that secrete hormones into the bloodstream to regulate a variety of bodily functions and consists of host organs, chemical messengers, and target cells? Select one: a. Nervous system b. Endocrine system c. Respiratory system d. Digestive system
b. Endocrine system
What is the concept that integrates practice and experience for a relatively permanent change in motor control processes? Select one: a. Motor remodeling b. Sensorimotor integration c. Motor learning d. Feedback learning
c. Motor learning
Which of the following consists of a series of irregularly shaped bones divided into five different categories depending on where they are located in the backbone? Select one: a. Medullar cavity b. Articular cartilage c. Epiphyseal plate d. Vertebral column
d. Vertebral column
Around which axis does frontal plane motion occur? Select one: a. Longitudinal b. Mediolateral c. Anterior-posterior d. Horizontal
c. Anterior-posterior
Which term refers to the amount of blood pumped out of the heart with each contraction? Select one: a. Radial pulse b. Cardiac output c. Heart rate d. Stroke volume
d. Stroke volume
Pronation of the forearm involves the inward movement of the forearm in which of the following planes? Select one: a. Sagittal b. Transverse c. Frontal d. Anterior-posterior
b. Transverse
