The ________ provide(s) an effective physical barrier to invasive microbes, while ________ provide(s) an effective chemical barrier.

A. lysosomes; ciliated cells
B. mucous membranes; stomach acid
C. perspiration on the skin; sebum from glands
D. normal flora; skin


Answer: B

Anatomy & Physiology

You might also like to view...

The gene for normal skin pigment (

A) can also code for the recessive trait of albinism (a). An albino man and a homozygous normal pigmented woman marry and have four children. What is the phenotype of the children? A) 75% normal skin pigment and 25% albino B) 100% normal skin pigment C) 50% normal skin pigment and 50% albino D) 25% normal skin pigment and 75% albino E) 100% albino

Anatomy & Physiology

An inflammation of the tonsils is referred to as __________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

When the testicles are too cold the _____ muscles in the spermatic cord contract drawing them closer to the warmth of the body.

A) Detrusor B) Cremaster C) Testicular D) Dartos E) Inguinal

Anatomy & Physiology

Which type of tissue covers exposed surfaces of the body?

A) neural B) muscle C) connective D) epithelial E) supportive

Anatomy & Physiology