Examlex
Identify the cell or stage of production:
A) urethra
B) secondary oocyte
C) ductus (vas) deferens
D) spermatogonium
E) oogonium
F) scrotum
G) spermiogenesis
H) polar body
I) sperm
J) ovum
K) oogenesis
L) prostate
M) Testis
N) spermatid
-Cell released from female's ovary during ovulation that can potentially be fertilized
Norepinephrine
A neurotransmitter and hormone that is involved in response to stress, increases arousal, and alertness, and plays a role in the body's "fight or flight" reaction.
Urogenital Tract
The anatomical system of the urinary and reproductive organs, often considered together due to their close proximity and shared functions in some contexts.
Polarized
Divided into two sharply contrasting groups or sets of opinions or beliefs.
All-Or-Nothing Principle
The principle that once the electrical impulse reaches a certain level of intensity (its threshold), it fires and moves all the way down the axon without losing any intensity.
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