The following is a list of structures of the male reproductive tract.
1. ductus deferens
2. urethra
3. ejaculatory duct
4. epididymis
Identify the order in which sperm pass through these structures from the testes to the penis.
A) 1, 4, 3, 2
B) 4, 1, 3, 2
C) 4, 1, 2, 3
D) 4, 3, 1, 2
E) 1, 3, 4, 2
B) 4, 1, 3, 2
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How does the dorsal blood vessel of the earthworm pump blood?
A) Contractile skeletal muscle surrounding the vessel B) Peristalsis C) Contractile chamber D) It doesn't pump blood. Blood flow is passive.
Which of the following nerve endings is not found in the skin?
A. Proprioceptors B. Ruffini corpuscles C. Tactile corpuscles D. Lamellar corpuscles E. Hair receptors
The ABO blood group is determined by __________ in the plasma membrane of RBCs.
A. glycolipids B. glycoproteins C. antibodies D. antigen-antibody complexes E. agglutinins
The ______ ______ at the ends of cardiac muscle cells help to join cells
Fill in the blank(s) with correct word