Twelve-year-old Aaron tried out for the Little League baseball team and was chosen as a pitcher. One day, after a few months of practice and games, Aaron's father told him, "Hey, kid, you're really getting some muscle definition there! You're going to be a major league pitcher someday, with muscles like that!" Which of Aaron's muscles in particular do you think were growing stronger and getting larger as a result of his pitching?
A) triangularis, masseter, trapezius
B) peroneus longus, biceps femoris, gastrocnemius
C) sartorius, soleus, rectus femoris
D) deltoid, triceps brachii, and brachioradialis
E) mentalis, risorius, levator anguli oris
Answer: D
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A) follicle-stimulating hormone (FSH) B) adrenocorticotropic hormone (ACTH) C) gonadotropic hormones D) thyrotropic hormone (TH) or thyroid-stimulating hormone (TSH) E) luteinizing hormone (LH)
Which of the following would be greater?
A) the end-diastolic volume when the heart rate is 150 beats/minute B) the end-diastolic volume when the heart rate is 60 beats/minute
The organelle that protects cells from the damaging effects of medications and toxins is the
A. microtubule. B. mitochondria. C. ribosome. D. secretory vesicle. E. smooth endoplasmic reticulum.
Which of the following is a function of the axial skeleton?
A) provides an attachment for muscles that move the appendicular skeleton B) provides an attachment for muscles that move the head, neck, and trunk C) provides an attachment for muscles involved in breathing D) provides protection for the brain and spinal cord E) All of the answers are correct.