Exam 46: Muscles, Skeletons, and Body Movements

How are the tube feet of sea stars, the erectile tissue of the penis in vertebrates, and the bodies of cnidarians supported?

In a skeletal muscle contraction, which neurotransmitter is released at the axon terminal to trigger an action potential in the muscle cell?

What does bone provide the blood with?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -many mitochondria

What is the diameter of muscle fibres?

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all. -scapula

Which skeletons are the radius and ulna considered to be a part of?

How deep may loons dive while foraging?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -high myosin-ATPase activity

Match each bone type with a skeleton type. Each skeleton type may be used once, more than once, or not at all. -humerus

In a skeletal muscle contraction, which of the following acts to allow the crossbridge cycle to occur when it flows into the cytosol through open ion channels?

What are the I bands in skeletal muscles composed of?

What are the Z lines in skeletal muscles composed of?

Which term refers to a muscle contraction where fibres cannot relax at all between stimuli?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -high fatigue resistance

Which of the following refers to a single, weak contraction of a muscle fibre?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -low myoglobin content

What kind of joints hold human vertebrae together?

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -red fibre colour

Match each characteristic with a muscle fibre type. Each muscle fibre type may be used once, more than once, or not at all. -intermediate glycogen content