Unit 3 Exam

A  True

B  False

A  True

B  False

A  False

B  True

A  False

B  True

A  True

B  False

A  is triggered by an LH surge

B  is stimulated by HCG

C  occurs after ovulation but prior to degeneration of the follicle

D  is triggered by an increase in the levels of estrogen and progesterone

E  involves shedding of the endometrium

A  immunizing the woman against human chorionic gonadotropin (hCG).

B  stimulating FSH and LH production.

C  making the woman’s reproductive tract toxic to sperm.

D  destroying the endometrium.

E  inhibiting FSH and LH production.

A  rhythmic contractions of the uterus

B  the beating of the egg’s flagella

C  the beating of cilia in the oviduct

D  the beating of the egg’s cilia

E  rhythmic contractions of the oviduct

A  in the ovary

B  in the upper part of the oviduct

C  in the vagina

D  in the uterus

E  in the lower part of the oviduct

A  B cells

B  helper T cells

C  cytotoxic T cells

D  macrophages

E  basophils

A  histamine

B  antigen

C  complement

D  antibody

E  interferon

A  we need to replace the vaccine used up last year

B  the immune system “forgets” the vaccine

C  not everybody got a flu shot last year

D  new flu strains are regularly evolving

E  once you have had the flu, you need another vaccination

A  passive

B  cell-mediated

C  nonspecific

D  active

E  humoral

A  The microorganisms trick the brain’s temperature control center into creating a hot environment that favors their growth.

B  None of the choices is correct.

C  The inflammatory and immune responses result in extra heat production.

D  The rapid multiplication of the invading microorganisms results in extra heat production.

E  The brain’s temperature control center responds to inflammation by creating a hot environment unfavorable to microorganisms.

A  The left ventricle is responsible for systole, while the right ventricle is responsible for diastole.

B  A more muscular wall is required to supply the pumping that powers the flow of blood into the pulmonary circuit.

C  A more muscular wall is required to supply the pumping that powers the flow of blood into the systemic circuit.

D  The position of the heart in the chest cavity allows for the left ventricle to develop a thicker wall than the right ventricle.

E  The left ventricle contains the pacemaker.

A  AV node

B  Purkinje fibers

C  specialized muscle fibers

D  SA node

E  bundle of His

A  the aorta

B  either an artery or an arteriole

C  a venule

D  an arteriole

E  an artery

A  carrying carbon dioxide

B  carrying oxygen

C  fighting infections

D  hemoglobin transport

E  blood clotting

A  products that are high in cholesterol

B  tobacco products

C  products containing trans fats

D  red meats

E  fruits and vegetables

A  arterioles

B  capillaries

C  arteries

D  veins

E  venules

A  pulmonary veins

B  left atrium

C  pulmonary arteries

D  aorta

E  left ventricle

A  heart murmur

B  blockage of a coronary artery

C  anemia

D  ventricular defibrillation

E  hypertension

A  a combination of negative and positive feedback.

B  lack of control over homeostasis.

C  a negative feedback mechanism.

D  a positive feedback mechanism.

E  response to external stimuli.

A  contraction of muscles

B  increased blood flow to the skin

C  retention of water

D  slowing of the heart rate

E  constriction of blood vessels in the skin

A  only comes into play when you are ill

B  is the way the internal environment influences the external environment

C  is the maintenance of a constant internal state

D  is a pathological condition

E  is the maintenance of a relatively stable internal environment

A  a negative feedback mechanism

B  nerve impulses from the brain

C  a positive feedback mechanism

D  a hormone ultimately controlled by the brain

E  a hormone produced in the kidney itself