Small bronchioles contain ________.
A. smooth muscles
B. cartilage rings
C. cilia
D. two of the above
Ans: A. smooth muscles
You might also like to view...
A scientist discovers a new species near coral reefs in Australia. On basic microscopic examination and after conducting a few simple experiments, he finds that this single-celled species is photosynthetic (using sunlight for energy),
has a rigid cell wall structure with no peptidoglycan, uses a flagellum for motion, and contains a variety of internal structures that are bound by plasma membranes. Given this information, this new species is most likely a ______ cell in the _____ subcategory. A. bacterial; eubacterial B. eukaryotic; fungus C. archaebacterial; fungus D. eukaryotic; algae E. eukaryotic; protozoan
The structure used for secreting the shell of many molluscs is called the:
a. foot. b. visceral mass. c. mantle. d. tentacles. e. radula
The evidence that suggests that a whale is related to
sheep is due to which of the following skeletal structures? a. skull b. ankle c. pelvis d. spinal column e. none of these
In which of these locations are salivary gland found?
A) side of the face below and in front of the ears B) the floor of the oral cavity C) roof of the oral cavity D) under the tongue.