Which of the following is an example of voluntary muscle activity?

Question

a. scratching
b. movement of food down the intestine
c. heart contractions
d. movement of urine into the bladder

Which of the following muscles are used when breathing?
a. intercostal and pectoral
b. intercostal and the diaphragm
c. interosseous and the diaphragm
d. interosseous and pectoral

The third metacarpal bone of a horse is called the
a. splint bone
b. cannon bone
c. dewclaw
d. sesamoid bone

The patella is a _______ bone
a. long
b. flat
c. sesamoid
d. carpal

Answer 1

For the first one -- which ones happen "automatically"? which one is deliberate?

For the rest, use a good dictionary for veterinary medicine. Once you understand the specific terms, the answers will be obvious.
http://www.google.com/search?rlz=1C1GGGE_enUS379US379&gcx=w&sourceid=chrome&ie=UTF-8&q=veterinary+medical+dictionary