Which of the following statements regarding Merocrine (Eccrine) glands is True?

a. may be found in dermis in skin along your back

b. produces a viscous sweat that contains a large amount of metabolic waste

c. produces an oil called sebum which has antifungal properties

d. have ducts that are attached to hair follicles

e. all of these are true statements regarding merocrine glands

 

which of the following is NOT correct regarding cardiac muscle cells?

a. more mitochondria than found in skeletal muscle cells

b. more calcium in sarcoplasmic reticulum than skeletal muscle

c. smaller cell size than skeletal muscle

d. produces its own electrical charge through automaticity

 

all of these nutrient or hormones are essential for normal bone growth EXCEPT?

a. Vitamin E

b. Vitamin C

c. Calcium

d. growth hormone

e. calcitriol

 

In which of the following types of cells would cell division NOT occur?

a. nerve cell

b. skin cell

c. epithelial cell

 

For the number 1, the only option that is true is the statement letter A. Because eccrine glands are found almost all throughout the body with a high concentration in the palms and soles. It does produce sweat, but the sweat does not contain large amounts of metabolic waste, only some ions such as chloride and sodium. Also, it does not produce sebum, and is not associated to hair follicles, this describes to other gland within the skin, the sebaceous glands.

For number 2, all statement are true except for statement B. It is true that cardiac myocytes are smaller because they are smaller, with a single nucleus, and has large amount of mitochondria with the ability to perform automaticity.

For number 3, all of the choices affect and are important to bone growth, except for Vitamin C. This vitamin functions in bone MINERALIZATION, which is a process that hardens the bone, not grows it. This is because vit. C is essential in the formation of collagen for mineralization.

For number 4, it is the Nerve cells. It is a known fact that when nerve cells do not have the capability of regeneration, unlike skin cells or the epithelial cells (which are the same because the squamous cells in the skin cells are considered as epithelial cells.) These epithelial cells have high rate of mitosis and are shed off as observed with our skin or the mucosa of the small intestine.