1) when it is cold, the __________ contracts and draws the testes closer to the body to
keep them warm.
a. cremaster muscle
b. pampiniform plexus
c. corpus spongiosum
d. perineum
e. corpus cavernosum
2) the __________ system exchanges oxygen and carbon dioxide with the air, whereas
the __________ system transports oxygen and carbon dioxide throughout the body.
a. respiratory; urinary
b. circulatory; digestive
c. respiratory; digestive
d. circulatory; urinary
e. respiratory; circulatory
3) what type of bond attracts one water molecule to another?
a. an ionic bond
b. a peptide bond
c. a hydrogen bond
d. a covalent bond
e. a hydrolytic bond
4) the apex of the heart is found__________ of the midline of the body.
a. to the right
b. to the left
c. in the center
5) which of the following articualtes with the vertebral column?
a. mandibular fossa
b. mastoid process
c. occipital condyle
d. foramen magnum
e. zygomatic arch
6) __________ is the substrate of __________.
a.glucose; lactose
b.lactase; glucose
c.lactose; lactase
d.galactose; lactose
e.sucrase; sucrose
7) chronic vomiting can lead to which of the following?
a.metabolic acidosis
b.metabolic alkalosis
c.respiratory alkalosis
d.respiratory acidosis
e.lymphatic alkalosis
8) in early pregnancy, what hormone stimulates growth of the corpus luteum?
a.human chorionic gonadotropin
b.follicle-stimulating hormone
c.human chorionic somatomammotropin
d.adrenocorticotropic hormone
e.progesterone
9) helper t (th) cells recognize antigens when they are bound to a(n) __________.
a. hapten
b. immunoglobulin
c. natural killer cell
d. major histocompatibility complex (mhc) protein
e. basophil
10) which of these is an example of active transport?
a. diffusion of oxygen from a place of high concentration to a place of lower
concentration
b. facilitated diffusion of k+
c. transport of glucose down its concentration gradient
d. transport of na+ from a place of low concentration to a place of higher concentration
e. transport of cl- following its concentration gradient
11) most common allergies are the result of __________.
a. autoimmune diseases
b. type iv (delayed) hypersensitivity
c. type iii (immune complex) hypersensitivity
d. type ii (antibody-dependent cytotoxic) hypersensitivity
e. type i (acute) hypersensitivity
12) what protein is the most important buffer in blood plasma?
a. fibrinogen
b. albumin
c. alpha globulin
d. gamma globulin
e. transferrin
13) which of the following organelles is not involved in protein synthesis?
a. smooth er
b. rough er
c. the golgi complex
d. the nucleus
e. ribosomes
14) where are unmyelinated nerve fibers surrounded by schwann cells?
a. in the pns
b. in the cns
c. in the pns and cns
d. nowhere. unmyelinated nerve fibers are never surrounded by schwann cells.