Forceful expiration involves the contraction of ________.
A. internal intercostals and abdominal muscles
B. neck and chest muscles
C. internal intercostals and chest muscles
D. neck and abdominal muscles
Answer: A
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Antigens are
A. something made by a white blood cell to destroy a pathogen. B. something that an antibody or T-lymphocyte binds to. C. disorders involving overactive immune systems. D. membrane receptors on B-lymphocytes.
The factor responsible for differentiating the embryonic gonads into testes is
a. the sex-determining region of the X chromosome. b. the sex-determining region of the Y chromosome. c. autosomal chromosomes. d. male gonadal-determining factor. e. the Sertoli cells.
What are the two steps of protein synthesis that produce a protein from a gene?
A) transcription and translation B) mitosis and cytokinesis C) replication and translation D) replication and transcription
The hormone(s) that may be slowly administered by intravenous drip to accelerate labor and delivery is/are
A) oxytocin.
B) prolactin.
C) luteinizing hormone.
D) oxytocin and luteinizing hormone.