Exam 27: Skeletons, Muscles, and Movement

The heart of a moose contains both cardiac and smooth muscle.

A single muscle fiber from a flea can lift about the same weight as a single muscle fiber from a human.

The stiffness of a hydrostat is generated by

The synapses between motor neurons and muscle fibers are called ____________ junctions.

Following some knee injuries, patients experience a swelling due to an accumulation of fluid within the knee, a condition referred to as "water on the knee." Which of the following is a likely source of this fluid?

Your small intestine has smooth muscle in its walls.

Lobsters, insects, and many other invertebrate groups have an ____________, an external skeleton that surrounds and encloses the soft tissues it supports.

Examine the figure below. Which letter indicates a region of a human where you would find muscle that lacks sarcomeres?

Bone-to-bone connections in the human knee are cushioned by

Hemoglobin allows slow muscle fibers to continue cellular respiration even when blood levels of oxygen are low.

Which animal below has a skeleton that is a hydrostat?

A marathon runner would be using

Where would you not expect to find spongy bone?

Weight training initially increases the strength of a muscle by increasing the __________ of muscle fibers.

One reason cats survive falls from heights better than humans do is that

Some genetically inherited forms of heart failure are caused by a mutation of the gene for myosin. Specifically what part of the heart would be affected by this mutation?

Which of the following would not be found in an insect?

Which of the following would play a role in movement as well as protection?

The _________ the surface area exposed to a medium, the smaller the amount of drag experienced.

The polysaccharide that forms the basis of support tissues in insects and lobsters is