When you try to focus on the tip of your nose,
A. the tension on the suspensory ligament increases.
B. the lens becomes more spherical.
C. the pupils dilate.
D. the lens becomes flatter.
E. the ciliary muscles relax.
Answer: B
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The two organ systems involved in controlling all other systems to maintain homeostasis are the
A. urinary and respiratory. B. skeletal and muscular. C. endocrine and digestive. D. nervous and endocrine.
The muscle that dorsiflexes the foot is the
A) tibialis anterior. B) tibialis posterior. C) soleus. D) peroneus. E) gastrocnemius.
The aponeurosis of the external oblique forms the ________ at its inferior margin
A) inguinal ligament B) linea semilunaris C) rectus sheath D) linea alba E) medial retinaculum
A baby holding its breath will
A. be termed a "blue baby". B. suffer heart damage because of increased pressure in the aorta. C. have brain cells damaged because of low blood oxygen levels. D. automatically start to breathe when oxygen levels decrease slightly. E. automatically start to breathe when the CO2 levels in the blood reach a high enough value.