What part of the eye changes diameter to regulate the amount of light entering the lens?
A) ciliary body
B) iris
C) pupil
D) lens
C
Explanation:
A) The ciliary body is the place to which the iris attaches.
B) The iris is the colored portion of the eye.
D) The lens focuses the light coming into the eye.
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Blood vessels that carry blood away from the heart are called ________.
A. arteries B. arterioles C. veins D. capillaries
Answer the following questions true (T) or false (F)
1. Cerebrospinal fluid increases the buoyancy of the brain so it is not crushed under its own weight. 2. Capillaries in the brain are unique from other capillaries as they have more tight junctions and limit endocytosis and exocytosis. 3. The nerve roots that fuse to form the spinal nerves serving the upper and lower limbs are attached to the spinal cord at the cervical and lumbar enlargements of the spinal cord.
Which of the following is a serous membrane that extends from the lesser curvature of the stomach to the liver?
A. Lesser omentum B. Greater omentum C. Mesentery D. Mesocolon E. Falciform ligament
Muscles that protract the scapula would be ________ thoracic muscles
A. anterior B. posterior