PART 3 ZOOL

_______(red blood cells), ________ (white blood cells).

is composed of leukocytes flowing in lymphatic vessels

• All movement in higher animals is dependent upon the contractile capabilities of muscle. 

• The muscle cells are wrapped by __________ tissue which maintains the shape of the muscle, and carries the blood vessels and nerves to the muscle tissue. 

• s striated (that is, it has "stripes" when viewed under the microscope) and is under the control of the somatic nervous system. 

• It is striated and under the control of the autonomic nervous system. 

• comprised of uninucleate branching cells connected together by intercalated discs, visible in the mid and high magnification image (three are labeled on the high magnification view).

• composed of uninucleate, unbranched cells which are under the control of the autonomic nervous system. 

• Relaxed smooth muscle cells are slender and elongate, with a centrally placed nucleus. 

It is usually arranged in two layers around the hollow tubes of the body: circular and longitudinal.

• carries a fundamental property of living tissue, irritability, to an extreme degree, being highly specialized to receive and transmit internal as well as external stimuli.

1. lie mostly outside the brain and spinal cord, and receive information and relay it to the central nervous system. 

lie mostly outside the brain and spinal cord, and relay signals from the central nervous system to effector organs (muscles or glands).