Which of the following is the most anterior structure in a cross-section at the lumbar level?

A) iliocostalis muscle
B) distal end of the iliotibial tract
C) rectus abdominis muscles
D) sacroiliac joint
E) vertebrae


C) rectus abdominis muscles

Anatomy & Physiology

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As each codon arrives at the active site of a ribosome, it attracts another molecule containing the anticodon. This molecule is called

A) DNA. B) mRNA. C) rRNA. D) tRNA. E) RER.

Anatomy & Physiology

If a species of animal evolves over generations to grow a large fan-blade like growth on its back to catch the wind and cool its body, this would be an example of responding to ________.

A. adaptation B. selection pressure C. climate change D. natural selection

Anatomy & Physiology

The lungs are special in that they receive some of their oxygen via diffusion directly from the atmospheric air through the ________ of the lungs.

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

Anatomy & Physiology

People who are ________ get sick very easily and do not recover easily.

A. anaphylactic B. immune C. autoimmune D. immunodeficient

Anatomy & Physiology