Bio 20 Anatomy Comprehensive Exam Actual Questions With Accurately Solved

Sperm in the epididymis travel immediately next to the: - correct answer ductus deferens Which of the following ducts travels through the prostate? - correct answer Ejaculatory duct Which of the following male accessory sex glands produces a yellowish secretion containing fructose, prostaglandins, coagulating proteins and enzymes? - correct answer Seminal vesicle The reduction in the number of chromosomes to half the normal count occurs during: - correct answer meiosis Which ligament anchors the ovary to the uterus? - correct answer ovarian ligament Where does fertilization usually occur? - correct answer ampulla of the uterine tube The fusion of sperm and egg is known as: - correct answer fertilization Where should a fertilized ovum implant? - correct answer uterus Which of the following is the phase of the ovarian cycle during which several primary follicles mature into secondary follicles? - correct answer follicular phase Where does sperm production occur within the testes? - correct answer seminiferous tubules Gonads function in the production of - correct answer gametes and hormones Accessory sex glands produce material that supports secondary oocytes, zygotes, and sperm. - correct answer True The supportive structure which contains the testes and epididymis is the: - correct answer scrotum Which of the following muscles elevates the testes during exposure to cold? - correct answer cremaster muscle sustenacular (sertoli) cells: - correct answer All the above Testosterone is the most important androgen. Which cells secrete it? - correct answer interstitial cells And sexual reproduction, what is the general name for the two cells that fuse together during fertilization? - correct answer gametes In females the homologous pair of sex chromosomes are X and Y, while the male has two X chromosomes. - correct answer False If gametes were produced by mitosis instead of meiosis, zygote would contain twice the diploid number, and each succeeding generation would continue to double ploidy (tetraploid etc.) - correct answer True bulbourethral glands (Cowper's glands) secrete an alkaline substance that protects sperm by neutralizing the acidity of the urethra. - correct answer True The majority of semen is produced by the: - correct answer seminal vesicles Preovulatory development of the follicle is stimulated by which pituitary hormone? - correct answer FSH Post ovulatory development of the corpus luteum is controlled by which pituitary hormone? - correct answer LH A radical mastectomy is a surgical procedure for the removal of the uterus: - correct answer False Does the following sequence of tissues correctly identify the histology of the uterus, from the uterine cavity to the outside? Perimetrium > myometrium > endometrium? - correct answer No Memory glands are modified sweat glands. - correct answer True The release of an immature ovum from the ovary is referred to as: - correct answer ovulation The number of chromosomes in a human gamete is? - correct answer 23 Semen is expelled from the body during: - correct answer ejaculation Which of the following is the main hormone that regulates spermatogenesis? - correct answer testosterone At what point in life does spermatogenesis begin in a male? - correct answer puberty What is the main female gonad? - correct answer ovary By what time of life are all oogonia formed in females? - correct answer before birth During cold temperatures, the testes are pulled closer to the pelvic floor and the warmth of the body wall, and the scrotum becomes shorter and heavily wrinkled. - correct answer True What is the function of the valves in the heart? - correct answer prevent backflow of blood through the heart Which of the following does not return blood to the right atrium of the heart? - correct answer pulmonary vein The heart is situated in the middle of the thoracic cavity in a region known as the - correct answer mediastinum Which valve is situated between the left atrium and left ventricle? - correct answer bicuspid (mitral) valve The right side of the heart receives: - correct answer deoxygenated blood from the systemic circuit The most abundant component of plasma is: - correct answer water What forms the majority of blood? - correct answer plasma What is the most common type of leukocyte in a healthy adult? - correct answer neutrophil When blood is centrifuged, what is found in the Buffy coat? - correct answer platelets and leukocytes What organ secretes most of the plasma proteins? - correct answer liver The subclavian artery continues into the arm forming all of the following arteries except the: - correct answer popliteal The valve between the left atrium and left ventricle is the: - correct answer bicuspid Which of the following carries blood from the legs back to the heart? - correct answer inferior vena cava In fetal circulation the opening between the right and left atria is known as the: - correct answer foramen ovale Which type of blood cells are not phagocytic? - correct answer thrombocytes Thrombocytes are formed from a large cell that breaks up into small fragments. This large cell is called: - correct answer megakaryocyte Formed elements make up about 45% of blood volume. The percentage of formed elements that are erythrocytes is about: - correct answer 99% The muscular portion of the heart is referred to as the: - correct answer myocardium Blood is sent from the right ventricle to the lungs through the - correct answer pulmonary arteries The largest of the circulatory routes is the: - correct answer systemic All arteries of systemic circulation branch from the - correct answer aorta The arterial system that supplies the brain is the - correct answer Internal Carotids Which statement is not true events? - correct answer They always carry deoxygenated blood And hepatic portal circulation, blood from the liver is return to the inferior vena cava through the - correct answer Hepatic vein The blood vessel is supplying oxygenated blood to the stomach, Spain, liver, gallbladder, and part of the pancreas is the - correct answer Celiac artery The great saphenous vein is a superficial blood vessel of the leg. - correct answer True The monocytes are the least com