What is the type of hair that is lightly pigmented and distributed over much of the body as "peach fuzz"?
A) arrector pili
B) terminal
C) intermediate
D) vellus
D
Explanation:
A) Arrector pili are the smooth muscles that are attached to hair follicles.
B) Terminal hairs are thick, heavy hairs on the scalp, eyebrows, and eyelashes.
C) Intermediate hairs are the hairs of the arms and legs.
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Which of the following best describes the term Z line?
A) protein that accounts for elasticity of resting muscle B) repeating unit of striated myofibrils C) storage site for calcium ions D) thin filaments are anchored here E) largely made of myosin molecules
Which type of food do women suffering from morning sickness generally prefer?
A. Carbohydrate-rich foods B. Protein-rich foods
Answer the following statements true (T) or false (F)
1. Veins that drain the cerebral hemispheres are the internal cerebral veins. 2. The sigmoid sinus, which penetrates the jugular foramen, leaves the skull as the external jugular vein. 3. The cervical spinal cord and the posterior part of the skull are drained by the vertebral veins. 4. The temporal and maxillary veins drain into the internal jugular veins.
An inhibitory local potential causes which of the following?
A. Hyperpolarization of the plasma membrane B. Depolarization of the plasma membrane C. Drifting of the membrane potential towards the resting membrane potential D. Neutralization of the plasma membrane E. Repolarization of the plasma membrane