Which of these occurs during an isometric contraction of a skeletal muscle?
A. The I bands shorten and the A bands stay the same length.
B. The thick and thin filaments slide past each other.
C. Sarcomere length does not change significantly.
D. The A bands shorten and the I bands stay the same length.
E. Cross-bridges lock onto actin, similar to what occurs in rigor mortis.
C
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The visceral layer of the glomerular capsule is made of specialized cells called podocytes.
Answer the following statement true (T) or false (F)
Identify the FALSE statement.
A) The trigger zone is the integrating center of the neuron. B) IPSPs depolarize the membrane. C) EPSPs that reach threshold can initiate an action potential. D) All of the statements are true.
The secretion of the seminal vesicles contains ________, which forms a temporary semen clot within the vagina after ejaculation.
A) fructose B) prostaglandin C) fibrinogen D) seminalplasmin E) urine
Where are Sertoli cells located or housed?
a. Leydig cells b. epididymis c. ductus deferens d. seminiferous tubules e. Müllerian ducts