What are the string-like structures in the heart that anchor the atrioventricular valves?

A. corpus callosum
B. cingulated pectorale
C. chordae tendineae
D. choroid plexus
E. corpus albicans


Answer: C

Biology & Microbiology

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Huntington's disease, an often fatal disease of the central nervous system, is inherited from a dominant allele. Furthermore, a person may not show symptoms of the disease until 30 – 50 years of age. Jack and Jill have been married for 40 years and have two children, Joe and Jane. Jack has recently been diagnosed with Huntington's disease. Assuming that Jane does not have the disease, determine

the probability that one of the children will eventually have Huntington's. What is the probability that both Joe and Jane will inherit the disease? Text section: LO2 Key Concept: dominant inheritance Level: Application of concepts What will be an ideal response?

Biology & Microbiology

Some cells retain the capacity to divide throughout their life cycle, whereas others do not divide in adulthood. Give

one example of each type. What will be an ideal response?

Biology & Microbiology

The cytoplasmic space in eukaryotic cells is occupied by many diverse membrane-bound structures with specific cellular functions called

A. flagella. B. chromosomes. C. organelles. D. cilia. E. receptors.

Biology & Microbiology

The designation "group A," used to help classify Streptococcus pyogenes, refers to this bacterium's

A) Lancefield antigen. B) hemolysis pattern. C) M protein. D) type of streptokinase produced. E) disease associations.

Biology & Microbiology