The Digestive, Skeletal and Muscular Systems

Digestion of proteins begins at the site labeled
Digestion of carbohydrates begins at the site labeled
Digestion of fats begins at the site labeled
An acidic environment is provided for digestion in the organ labeled
No digestion takes place here; only some water and water-soluble nutrients are absorbed.
Substances that aid in the digestion of fats are produced by the organs labeled
1. 4 and 7
2. 1 and 2
3. 5 and 6
4. 2 and 3
The products of protein digestion are
1. simple sugars
2. amino acids
3. glycerol and fatty acids
4. nucleic acids
The products of carbohydrate digestion are
1. simple sugars
2. amino acids
3. glycerol and fatty acids
4. nucleic acids
The products of fat digestion are
1. simple sugars
2. amino acids
3. glycerol and fatty acids
4. nucleic acids
Skeletal muscle can be described as
1. striated
2. voluntary
3. smooth
4. cardiac
5. involuntary
Muscles lining the digestive tract move food through by a process known as peristalsis. These muscles can be described
1. striated
2. voluntary
3. smooth
4. cardiac
5. involuntary
Skeletal muscles work in antagonistic pairs known as
1. flexors and extensors
2. origin and insertion
3. smooth and striated
4. voluntary and involuntary
Muscles receive stimulus to contract from
1. brain cells
2. sensory neurons
3. motor neurons
4. hormones
The only enzyme that digests fat in humans in produced by the __________________ and is secreted into the _____________________.
1. pancreas / small intestine
2. liver / stomach
3. stomach / small intestine
4. thyroid / large intestine
The energy source for all muscle contraction is provided by the molecule
1. ATP
2. DNA
3. glucose
4. RNA
Red marrow produces
1. white blood cells
2. antibodies
3. red blood cells
4. fat
The purpose of yellow bone marrow is
1. red blood cell production
2. fat storage
3. white blood cell production
4. tendon attachment
Muscle groups known as flexors move a joint toward the body by ______________________; muscle groups known as extensors move a joint away from the body by __________________________.
1. contracting / contracting
2. contracting / extending
3. extending / contracting
4. extending / extending