FREE CSCS: Structure & Function of Body System Questions and Answers
What is the name of a muscle cell's membrane?
An electrocardiogram (ECG) measurement by the machine shows heart ventricular repolarization.
Explanation:
T-Wave. Ventricular repolarization is correlated with the T-Wave.
True or False: Skeletal muscle is connected to myofilament, a fibrous connective tissue.
Explanation:
The fibrous connective tissue layers that are involved with skeletal muscle are the epimysium, perimysium, and endomysium. Myofilaments (actin and myosin) are the contractile apparatus contained within myofibrils (which are contained within muscle fibers).
If the blood's oxygen partial pressure is low and the alveoli's partial pressure of oxygen is high. As oxygen moves,
Explanation:
From a high partial pressure region to a low partial pressure region. Moving from a high concentration area to a low concentration area, oxygen will follow the gradient in concentration.
The ankle is a multiaxial joint, correct or incorrect.
Muscle fibers of type IIa are...
Explanation:
White and red. Since Type I muscle fibers have a greater capacity for aerobic energy supply, they are "slow-twitch" and have a higher resilience to fatigue. Due to a more robust anaerobic energy source, type IIa muscle fibers are "fast-twitch," have a better capability for generating force quickly, and have lesser resistance to fatigue. Muscle fibers of Type IIx are "fast twitch," more capable of producing power quickly, and less resistant to exhaustion than Type IIa fibers.
What are the two major myofilament kinds can be discovered inside a myofibril?
Explanation:
Myosin and Actin. The mechanism used to contract the muscle cell is found within myofibrils. Actin and myosin, two different forms of myofilaments, comprise most of this apparatus.