Understanding Muscle and Nervous Systems

What are the three types of muscle tissue?

• Cardiac, Smooth, and Skeletal

• Voluntary, Involuntary, and Cardiac

• Striated, Non-striated, and Cardiac

• Connective, Epithelial, and Muscle

What is the primary function of skeletal muscle?

• Pumping blood throughout the body

• Facilitating movement by contracting and relaxing

• Protecting internal organs

• Storing minerals and nutrients

Which muscle is located at the front of the upper arm?

• Trapezius

• Biceps brachii

• Deltoid

• Latissimus dorsi

What principle explains how skeletal muscles work?

• All-or-none principle

• Sliding filament theory

• Lock-and-key mechanism

• Feedback inhibition

Which type of muscle contraction involves the muscle lengthening while under tension?

• Isometric

• Concentric

• Eccentric

• Isotonic

What joint action is primarily brought about by the quadriceps muscle group?

• Flexion of the elbow

• Extension of the knee

• Abduction of the shoulder

• Rotation of the hip

Which type of muscle fibre is most resistant to fatigue?

• Type I (slow-twitch)

• Type IIa (fast-twitch oxidative)

• Type IIb (fast-twitch glycolytic)

• Type III (intermediate)

What is the primary function of the nervous system?

• Transporting oxygen and nutrients

• Coordinating and controlling body activities

• Producing hormones

• Protecting against pathogens

What is the role of the sarcoplasmic reticulum in muscle contraction?

• Stores calcium ions

• Produces ATP

• Transports oxygen

• Generates electrical impulses

Which type of muscle tissue is under voluntary control?

• Cardiac muscle

• Smooth muscle

• Skeletal muscle

• Connective tissue